Mo-Fit Heart Rate Monitor Chest Strap for Garmin, Apple, Android, Peloton, Zwift, Strava, ANT+ and Most Bluetooth 4.0 Enabled Fitness Devices

(376 customer reviews)


Last updated on 17:53 Details
  • ✔️ ATHLETE TESTED/ VERIFIED: Accurately and reliably measures heart rate using advanced, ultra-low-power consuming technology and transmits your heart rate data wirelessly, in real-time, to your Bluetooth 4.0 and or ANT+ enabled smartwatch, fitness tracker, smartphone or tablet.
  • ✔️ PRO BUILD QUALITY: Manufactured with durable, wear-resistant materials that won’t corrode, break, crack or tear. Impact-resistant housing is ultrasonic-welded to seal out water, sweat, and dust (Full IP67 water resistance, but not for swimming). Dual-band data transmission.
  • ✔️ EXPANSIVE COMPATIBILITY: Compatible with hundreds of GPS watches, fitness trackers, smartphones, tablets and exercise equipment equipped with ANT+ and or Bluetooth 4.0 including: Garmin, Peloton, iPhone 4s and newer, iPad 3rd Gen and newer, Apple Watch, Android, Polar, Coros, Samsung, and many more. Compatible with hundreds of Apps including: Zwift, Heart Graph, Wahoo Fitness, Polar Beat, Map My Ride/ Run, Endomondo, Runtastic, DDP Yoga, and many more.
  • ✔️ UNCOMPROMISING COMFORT: Ultra-light design weighs only 1.6 oz. Fully adjustable chest strap sets up easily. Finely woven elastic strap is soft, comfortable, durable and won’t chafe. Strap adjusts from 26”-39” (66 x 99 cm) with a maximum stretch of 61” (155 cm).
  • ✔️ UNRIVALED WARRANTY: Industry best 24 MONTH WARRANTY | 100% SATISFACTION GUARANTEE. USA based Customer Service and Phone Support.
Item Package Dimensions L x W x H

‎6.97 x 3.03 x 1.1 inches

Package Weight

‎0.09 Kilograms

Item Dimensions LxWxH

‎6.75 x 1 x 1 inches

Brand Name




Suggested Users



‎Engine Design Group


‎Medium/2X-Large (Pack of 1)

Sport Type


376 reviews for Mo-Fit Heart Rate Monitor Chest Strap for Garmin, Apple, Android, Peloton, Zwift, Strava, ANT+ and Most Bluetooth 4.0 Enabled Fitness Devices

  1. NurseGappy

    This has been a good purchase. As far as I can tell, it’s accurate and the device itself is easy to use. Couple of issues—the website isn’t super easy to navigate and if you’re not a technophile a little difficult to use. Second, the monitor doesn’t always connect with my Peloton- maybe 20% of the time? Not sure if it’s me, the bike, or the Mo-Fit. Finally, it’s a little too easy to disconnect the monitor from the strap-it has fallen off once or twice.

    On the whole, though, I like it and would buy it again.

  2. Philip Moore

    Instant connection to smartwatch (Bluetooth) and cycling computer (ant+). Both at same time. Very responsive reading of heart rate and quite accurate too. Occasionally the Bluetooth connection will drop out from watch whilst working out but soon reconnects. Not sure how long strap will last as it seems very thin, but it’s comfortable and still holding elasticity. Do recommend disconnecting the unit from the strap when not in use to save battery life of both unit and devices connecting to it.

  3. Mike’s Reviews

    I snapped the module onto the band, wet the contacts, and put it on as directed. Then I went into my apple watch and there it was under Bluetooth devices. I paired and it just works. No issues. Note, my understanding is it can only pair one Bluetooth device at a time.

    Admittedly it’s a little weird to have a consumer electronic device these days that doesn’t come with an app. It also has no LED lights or anything to let you know it’s working. Somehow it knows when you put it on and that is when it turns on and the Bluetooth signal starts transmitting.

    I saw some others complain about the durability so I’ll come back and update if anything goes wrong. So far so good.

  4. Anthony D. Conner

    I have been using the heart monitor for around 3 weeks and once I was able to get my setup correct, it has worked flawlessly. I am using the heart monitor with my Wahoo Snap bike trainer, which also has a cadence monitor installed. I paired the devices thru the Zwift program. At first I could not get the heart monitor to work consistently. It keep dropping out. Fortunately, I got outstanding help from the customer support team (NGN engine design group) which worked out all the kinks. I can’t thank them enough for their patience, they were awesome. Now it runs without dropping out. My problem was with Bluetooth. For some reason I was getting conflicts that couldn’t be worked out. But once I paired all my devices thru ANT+ , no problems.

    Note: part of the “working out process” I paired the heart monitor with my Garmin Forerunner 15 watch. Worked fine.

  5. Robert

    Several months ago, I was running into a problem with my watch. I found that Apple Watch band had to be cranked waaaaaay tight when I run to get a steady heart rate with the built in light-based sensor. I went with this heart rate monitor and found it very comfortable, and convenient. It pairs up with Apple Watch a second or two after you put it on and Apple Watch disables it’s internal HR sensor.

    The update rate is helpful; updating Apple workouts on your HR every second or so so that you can confirm whether you are running too fast, or taking it too easy. I like to stick at 155 for running, and 135 for cycling; that’s my happy zone.

    I don’t agree with the 800 hour battery life number. After 5 months use my battery just went dead on me. That is probably about 150 hours of working out. I don’t really mind changing a battery out for something I use most days of the week…but 800 is a major exaggeration.

  6. Dland36

    I have to connect to Bluetooth every time I want to use it. It doesn’t recognize any programs or third party apps which I don’t like using. I don’t understand why this company doesn’t make its own app by itself, so all you need to do is download the app and you’re ready to go. I just boxed it up today and shipping it back for a return.

  7. DMZ33

    Works good but I had a bit of a setup issue, until I typed “app”(not apps) in the search bar on the Engine Design Group website, where “” takes you. (i.e. mobile fitness) Then I saw an unformatted list of all the manufacturers that it works with. I picked the first one and went through the pairing process. Basically the secret is this… it doesn’t work until you start a work out. Which of course, with hindsight seems utterly obvious. With a workout started it will simply track your heart rate.
    The last chest heart rate monitor I bought was many years ago, a polar brand which came with the wrist readout device. This device works with a phone, so some fiddling around is expected I suppose with the bluetooth interface.

    I downloaded Heart Graph app which was the first manufacturer of the “app” that they listed. Works beautifully, so part of the 5 stars is due to the charting capabilities and simplicity of that app. Also I watch youtube while I’m on the elliptical so was worried about the heart monitor app being able to keep track of the workout while I was mostly watching youtube, but after switching over it took about 1/2 sec to update to current heart rate and graph. Pretty sweet!

    The strap is replaceable and the device just snaps to the strap, making the purchase of a new strap possible as a thoughtful feature, straps seem to lose spring after a year or two with my previous devices so this is nice.
    Anyway, all in all including the Heart Graph app I’m giving it 5 stars. I should note as well that the Health app on the iPhone also works with the heart monitor strap or at least did for a bit, now I suspect it’s talking to Heart Graph instead of the monitor itself. Maybe could have saved the $3 dollars but I like the app so I’m good.

  8. Rod Wittmier

    I’m very pleased with this device, giving it a 5+.
    I highly recommend this product and will not hesitate giving it as a gift or to recommend it to others!
    I use it for aerobic walking and hiking. Very pleased with their recommended app “myWorkouts”. I have also set it up for MapMyHike and it works well.
    It’s very comfortable and seems to communicate reliably via Bluetooth to my Android phone.
    For hiking, I put it on in the am (1 snap undone) then when ready to hike I snap the other side and wet under the strap. I’ve used it for 6 hour hikes and it is amazing! Looking forward to trying it on 8 hour hikes and more.
    Years ago I used a Polar strap and this compares extremely well, better than Polar with the strap being separate from the device.

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