Coospo HW9 heart rate monitor armband
Accurate, comfortable HR tracking that connects instantly to your favourite fitness apps.
Description
How to use
Shipping & delivery
Return & refund policy
I was sceptical about switching from a chest strap but the upper-arm fit is genuinely more comfortable on long rides. Pairing with Zwift over ANT+ took about 30 seconds and the connection has never dropped. The HR zone colours on the device are a nice touch I didn't expect to use as much as I do.
Marcus
I use this with the Peloton app and it connects instantly every single time. The calorie readout matches closely with what the bike shows, which gives me confidence the data is accurate. The armband doesn't move even during HIIT — really impressed.
Priya
Great sensor for the price. The BLE and ANT+ dual output is the real selling point for me since I run with my phone and a Garmin head unit at the same time. Fit is comfortable and the rechargeable battery is a huge convenience upgrade over older monitors I've used.
Dan
I bought this specifically for Wahoo and it worked first time, no fuss. Wearing it on my arm instead of a chest strap feels so much better during swimming intervals in the gym. The HR zones keep me honest about not going too hard on recovery days.
SofiaOne armband that connects everywhere and never misses a beat.
Dual-protocol connection
Broadcasts BLE 5.0 and ANT+ at the same time so you can feed two devices simultaneously.
Upper-arm fit
The soft, adjustable strap keeps the sensor snug without restricting movement or circulation.
HR zone display
Colour-coded heart rate zones update in real time directly on the device.
Rechargeable battery
Built-in rechargeable cell means no coin batteries to replace mid-training week.
Why the HW9 outperforms the rest
Basic chest straps can be uncomfortable and fiddly to pair, while wrist-based trackers lose accuracy during high-motion activities. The HW9 sits on your upper arm for stable optical readings, broadcasts on two protocols at once, and requires no electrode gel or clothing clips. It is designed for real athletes who need data they can actually rely on.
Buy it nowPrecision that moves with you
The HW9 uses optical heart rate sensing positioned on the upper arm, away from wrist movement and sweat buildup, so readings stay stable whether you are sprinting or cycling indoors. It automatically displays your HR zone in real time, so you always know whether you are in fat-burn, cardio, or peak output territory. That kind of feedback turns guesswork into a structured, progressive training plan.
Works with the apps you already love
With both BLE 5.0 and ANT+ transmitting simultaneously, the HW9 pairs effortlessly with Peloton, Zwift, Wahoo, and virtually any fitness platform that accepts a chest-strap alternative. Setup takes seconds — no proprietary dongles, no subscriptions. Once paired, calorie data and heart rate stream continuously so your app records a complete picture of every session.
5 real benefits of the Coospo HW9 armband
From the first pairing to the hundredth session, here is what makes it worth wearing.
1. Connects to anything
BLE 5.0 and ANT+ run together, so your phone app and your bike head unit can both receive data at the same time without switching modes.
2. Zone-based training
On-device HR zone feedback helps you stay in the right intensity range, making every session more purposeful than just watching a raw number.
3. Calorie awareness
Continuous calorie tracking means your fitness app gets a complete energy picture, not an estimate based on step count alone.
4. All-day comfort
The adjustable armband positions the sensor on the upper arm where motion artefacts are lower, and the soft strap does not chafe during long efforts.
5. Rechargeable convenience
A built-in battery that recharges via USB means you are never hunting for a CR2032 the night before a big ride or race.
What our customers report
After putting the HW9 through real workouts, here is what users consistently told us.
Percentage circleReported that the armband stayed secure throughout runs, rides, and interval sessions.
Said pairing with Zwift, Peloton, or Wahoo was complete in under a minute.
Found the HR zone display genuinely useful for structuring their training intensity.
*Based on self-reported results from verified customers collected over a 90-day period.
Get yours nowStraight from our customers
Real people, real workouts, real feedback.
I was sceptical about switching from a chest strap but the upper-arm fit is genuinely more comfortable on long rides. Pairing with Zwift over ANT+ took about 30 seconds and the connection has never dropped. The HR zone colours on the device are a nice touch I didn't expect to use as much as I do.
I use this with the Peloton app and it connects instantly every single time. The calorie readout matches closely with what the bike shows, which gives me confidence the data is accurate. The armband doesn't move even during HIIT — really impressed.
Great sensor for the price. The BLE and ANT+ dual output is the real selling point for me since I run with my phone and a Garmin head unit at the same time. Fit is comfortable and the rechargeable battery is a huge convenience upgrade over older monitors I've used.
I bought this specifically for Wahoo and it worked first time, no fuss. Wearing it on my arm instead of a chest strap feels so much better during swimming intervals in the gym. The HR zones keep me honest about not going too hard on recovery days.
Train smarter — your heart rate data should be this reliable.
Grab the HW9 today at its current reduced price and start every session with confidence.
Get yours nowFrequently asked
Will the HW9 work with my Peloton bike?
Can I connect it to two devices at the same time?
How long does the battery last, and how do I charge it?
Is the armband suitable for people with smaller or larger arms?
What is your return policy if I am not satisfied?
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We stand behind every order with a 30-day return policy and responsive customer support — no hoops, no runaround. Shop with confidence knowing our team is here to help if anything is not right.