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LifeSpan TR1200-DT3 Review – Features, Pros, Cons, and More!

Christian Pinedo


This is our definitive LifeSpan TR1200-DT3 review. Why are we doing this review now?

Well, because walking treadmills have boomed in popularity over the last few years and as more people work from home, use standing desks, and start to pay more attention to their health and fitness, we can’t see the trend slowing down any time soon. 

In this review article, we take a closer look at one of the best LifeSpan treadmills on the market and review its features, while answering some questions you may have, to see if we can help you to make a more informed decision when looking to buy this amazing treadmill from LifeSpan. 

Read on to see how it compares to its main competition.   

Overview of the Lifespan TR1200-DT3 Treadmill

Often found on ‘best selling’ lists, review sites, and constantly featured as one of the best treadmills on the market, the TR1200-DT3 is a great treadmill that would go perfectly with a standing desk.

It’s whisper-quiet features allow you to enjoy this treadmill anywhere and it’s compact design means you won’t struggle to fit it under your desk. 


A very close runner up on our list, the Lifespan TR1200 dt3 treadmill comes with a range of tech to help you reach your fitness goals and stay safe. It has a durable build and a great design, making it one of the best treadmills on the market.

Everything That Comes In The Box

When your Lifespan DT3 treadmill arrives you will be eager to get started, luckily for you, there’s no setup required. 

In your box you will find your treadmill and console ready to go, meaning you can simply plug in the treadmill, connect the console and start walking. 

You’ll also see why it’s earned the title “best under desk treadmill with an incline”, because although the DT3 doesn’t have an incline setting, it does have a slight incline out of the box, giving you an extra level of difficulty when in use that you just don’t find with other models.

Fully assembled out of the box the TR1200 has a low-profile and compact build that fits under the majority of desks and also has an ergonomic design to promote better posture.  

What you see is what you get with LifeSpan and that means high-quality, when your treadmill arrives you’ll be ready to go in minutes. Just remember, you will need a standing desk to go with it. 

What Makes the Lifespan TR1200-DT3 Special?

The LifeSpan treadmill is one of the top-selling treadmills on the market and is highly regarded as one of the best around to pair with a standing desk. 

Lifespan produces a range of fitness equipment for both home and office use and this treadmill has been specifically designed for use with a standing desk, it’s compact design ensures it comfortably fits into small spaces with ease, and its high-quality build has helped it to become a firm favorite amongst consumers.  

The Lifespan DT3 has a strong motor, giving you a top speed of 4MPH, which is more than enough speed for continued walking as you work, and a wide walking belt that gives you sufficient space to move. 

Most users will settle at a speed closer to 2 MPH, but it’s good to have the option to go faster if you want. 

One of the best features on the Lifespan TR1200 treadmill is it’s tethered console, which can easily be placed on your desk, making it easier for you to track your performance and keep a closer eye on your fitness. 

LifeSpan treadmills are becoming increasingly popular and there are many challenges to the crown, however, the Lifespan DT3 model has continually proved itself as one of the best treadmills on the market. 

With a strong and durable build and a comprehensive design that doesn’t break the bank, this treadmill is a great option. 

Let’s take a closer look at some of the reasons why this treadmill performs so well. 


A very close runner up on our list, the Lifespan TR1200 dt3 treadmill comes with a range of tech to help you reach your fitness goals and stay safe. It has a durable build and a great design, making it one of the best treadmills on the market.

The Console (4.5/5)

The lengthy tethered console is a great feature on the TR1200 DT3 treadmill and it adds another layer to this LifeSpan treadmill as it provides you with clear, real-time performance stats. 

The console itself weighs 3lbs, (so you know it’s not going to move or slide off your desk) and it allows you to keep track of your distance, calories burned, speed, time, and more. 

There’s a USB charging port on the back of the console, giving you a simple way to charge your devices as you walk and work and there’s a handy safety clip on the front of the console that you can use to kill the treadmill in the event of you tripping or falling.  

You can easily toggle through the metrics or control the speed of the treadmill by using the buttons on the console, and the LED screen ensures all your information is easily readable. 

With all that being said, where the console sets itself apart from its competitors is with its tech. 

Featuring two innovative LifeSpan features, Intelli-Step, for more accurate step tracking capabilities, and Intelli-Guard, which ensures the treadmill only operates when someone is actually walking on it, you can also enjoy a safer treadmill experience when walking and working.  

Horsepower (5/5)

Complete with a whisper-quiet motor, and a top speed of 4 MPH, you’ll be more than satisfied with the power of the TR1200 motor. After all, it is a LifeSpan, and they’re known for their high-quality builds, competent speed ranges, and powerful motors.

Its strong construction allows you to walk for a full day at work without enduring wear and tear on the machine and you won’t have to worry about excess noise as the quiet operation suppresses mechanical noise enabling you to focus on the day’s tasks. 

Weight Limit (5/5)

The LifeSpan TR12000 has a high user weight limit of 350lbs and is more than sturdy enough to be used by the majority of people. To give you even more support the DT3 also includes 6 compression shocks, which work to keep the walking deck in place and absorb the impact of you striking the belt. 

This is a fantastic feature that allows you to use the DT3 for a full day of walking without increasing your risk of stress, pain, or injury. 

How loud is the TR1200-DT3? (5/5)

One of the key features of the Tr1200-DT3 is just how quiet it is. 

It’s one of the quietest treadmills on the market and with such a powerful shock absorption system, plus its 2-ply belt, you will barely make a noise. 

The sound and impact of your footsteps are absorbed by the pads, and you won’t hear any additional noise from the motor or the belt when using the TR1200 treadmill, making it the perfect option for anyone that works out of a shared office space or who wants to enjoy whisper quiet walking sessions while trying to concentrate on their work.

What type of warranty do you get? (4.5/5)

We’re happy with the warranty Lifespan offer with the TR1200 and feel it’s consistent with other brands. You get a lifetime warranty for the frame, 3 years for the motor, 2 years for parts, and 1 year for labor. 

1 year for labor and 2 years for parts are pretty standard warranty lengths, especially for a model in this price range. 

However, as with any treadmill desk, ensure you take care of it and keep on top of your maintenance to help it last longer. 

What Different Models Are There of the TR1200?

We think it’s a good place to note that although this article is about the DT3 desk treadmill, there are two other models from the LifeSpan TR1200 range, the DT5, and DT7. 

Let’s take a closer look below to see how they compare with each other. 

Treadmill Dimensions63” L x 28.5” W x 7.25 H68.5” L x 38”/48” W68.5” L x 38”/48”/60”/72” W 
Belt Size20” x 50”20” x 50”20” x 50”
Drive Motor2.25 HP Continuous Duty Motor2.25 HP High Torque Continuous Duty DC2.25 HP High Torque Continuous Duty DC
Recommended use6 hours per day6 hours per day6 hours per day
Speed0.4 – 4.0 MPH0.4 – 4.0 MPH0.4 – 4.0 MPH
Max User Weight350 lbs350 lbs350 lbs
Item Weight117lbs including console174lbs including desktop200lbs including Desk
Safety featuresIntelli-GuardIntelli-GuardIntelli-Guard
Other: This model contains a USB charger in the console, allowing you to charge your device while working.  This model also comes with a desk, which has a fully adjustable height and can be customized to your preferred size and color. This model comes with a fully customizable desk that can be adjusted by a single touch. You can fully customize the desk, its color, and even the width.

Health Benefits of Walking and a Treadmill Desk

In an increasingly sedentary world, office treadmills are becoming more and more valuable. 

It’s well established just how dangerous it can be to spend all day sitting down, barely moving, or doing any forms of exercise, which only goes to show just how important a treadmill could be for your health. 

Let’s take a look at some of the health benefits associated with using a treadmill at work.

  • Burn more calories – The obvious benefit of using a treadmill at work is that you will increase your step count. It wouldn’t be out of the question to say that by introducing a treadmill into your office, you could increase your step count x 2 (or more), which would have a huge impact on your calories burned, having a direct impact on weight loss. This can be hugely beneficial for any office workers that are looking for ways to lose weight but who struggle to find time for the gym. 
  • Improved posture – Something that traditional office workers often struggle with is their posture, which is drastically affected by sitting all day, especially when other forms of exercise are limited. This can harm your muscles, bones, joints, and ligaments, causing the body to get stiffer, tighter, and become less efficient. All of these things can lead to injury, pain, and additional health issues. 
  • Build a stronger body – By using a treadmill at work and moving more throughout the day you can build a stronger and more robust body. Being desk-bound all day can lead to muscle atrophy and a weakened body, something that can be extremely dangerous for the older generation. 
  • Overall better health – Being more active is one of the easiest ways to reduce your chances of developing serious health issues such as heart disease, diabetes, high blood pressure, and more. By being physically active throughout the day you can improve your circulation while also strengthening your cardiovascular system. 

Accessories for Your Lifespan TR1200-DT3

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You will obviously require a desk for your treadmill, but let’s take a look at other accessories you may want to use with your LifeSpan treadmill.

There may come a time when you want to rest, and in that case, you will want a strong mat to support you as you stand and take the pressure off of your knees and joints. Just ensure that you pick a thick mat with enough support for your weight.

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Although you are covered by a warranty you don’t want to use your treadmill in a way that leads to strain, wear and tear or ultimately breakdown.

A good silicone oil lubricant can help with this. Review your machine regularly and use a lubricant to keep all parts fresh so you can extend the life of your machine.

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Although this may sound counter-productive, hear us out, it may also be a good idea to get a stool to use with your treadmill.

You may not want to walk all day and there will be times when you need a rest. In that case, you will want something strong, sturdy, and comfortable so that you can rest your legs before walking again. 

Just remember to use a mat so that you don’t damage the treadmill or the belt. 

Finally, you may also want to consider investing in an under-treadmill mat. These are more for the protection of your office floor than the treadmill, but whether that’s at home or the actual office, you don’t want to be the person responsible for damaging the floor and causing problems. 

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What features to look for in an under desk treadmill

Looking for a treadmill for the office is just like buying any other piece of fitness equipment. You need to ensure it meets your needs and can help you to achieve your goals but you also need to ensure that you can fit the equipment into your room and that you’ll be able to successfully use it. 

When buying a treadmill here are our top 3 things to consider:

  1. Size – Probably the most important factor, the size of the treadmill is essential. Not only must it fit under the desk and be the right dimensions for you to use safely, but it must also fit in your office space without taking up too much room. Ensure you always check the size. 
  1. Noise level – While most treadmills now come with a whisper-quiet motor it’s also worth checking just how loud a treadmill is. There may only be a few decibels difference between models but it could make all the difference for you and your coworkers. 
  1. Console – Some consoles are built into the treadmill whereas others have a moveable screen. It’s also worth considering the features that come with it such as charging ports, performance stats, or Bluetooth connectivity. You may not want all of these features but you should certainly explore before making up your mind. 


A very close runner up on our list, the Lifespan TR1200 dt3 treadmill comes with a range of tech to help you reach your fitness goals and stay safe. It has a durable build and a great design, making it one of the best treadmills on the market.

Benefits of an under desk treadmill 

These types of treadmills for the office can be hugely beneficial as they offer so much more than a way to keep active. 

Walking throughout the day and staying on your feet is a great way for you to increase your step count and burn calories (two things which can help you to lose weight and stay healthy) but it can also help you to build a stronger, fitter, and more defined body. 

The associated benefit of this is that by improving your fitness levels, you are also reducing your risk of developing serious health problems such as high blood pressure or cardiac problems. 

It’s common for some people to reach 20,000 steps a day when using a treadmill at work and this increase in activity can also lead to a heightened metabolism, but perhaps more beneficial is the impact it can have on your posture, balance, coordination, and mobility, not only because you are moving throughout the day, but because you’re no longer sitting in a hunched over, shoulders forward position. 

There are other benefits of a treadmill desk which are just as important and they all lead to improvements for your health, which is certainly something everybody needs. 


Are under office-based treadmills worth it?

If you’re a desk-based worker, whether in an office or at home, it’s no secret that your activity levels can suffer which can cause a whole host of issues such as problems with your posture, weakening muscles, or other, more serious health conditions. 

It’s also well established that by moving more throughout the day, and making physical exercise a regular part of your day that you can benefit your health and bring about positive improvements to your life. 

Therefore it goes without saying that a LifeSpan treadmill is worth it and should be considered by anyone who has a desk-based job, just one look at a review will tell you just how good a choice it will be. 

If you’re looking for a cheaper, but still high-quality alternative to this Lifespan Treadmill, check out our GoPlus Under Desk Treadmill Review here.

Can you lose weight with a treadmill desk?

The key concept of losing weight is being in a calorie deficit and one of the ways to do this is to expel more calories than you take in. By using a treadmill desk you can drastically increase your step count for the day and with it the number of calories you burn. 

Consistently burning calories in this way will also help you to improve your metabolism, which is another key component of losing weight. 

Do treadmill desks really work?

The main goal of a treadmill desk is to help you increase your activity levels and keep active while you work. This will help you to burn more calories, improve your fitness, and fight off ill-health and other related problems. 

It’s fair to say that a treadmill desk, and the LifeSpan 1200 in particular, comfortably achieves that goal, so yes, they do work. 

If you’re on the fence it may be time to take a leap of faith and experience it for yourself. Read a review of a walking treadmill and you will see thousands of people talking about the benefits and often saying how it was one of the best decisions they ever made. 

It might be time for you to make an equally great decision. 


A very close runner up on our list, the Lifespan TR1200 dt3 treadmill comes with a range of tech to help you reach your fitness goals and stay safe. It has a durable build and a great design, making it one of the best treadmills on the market.

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Last update on 2024-06-20 at 21:58 / Affiliate links / Images from Amazon Product Advertising API

Christian Pinedo

Hey there, Christian here. I'm a former fat guy who just wants to help you succeed in your fitness journey. I share my own experiences and experiments right here on this site. Let me know how I can be of help by leaving a comment below. If you want to learn more about my 50 lb weight loss journey, click here.

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