Train smarter with the Magene H303 — a dual-band heart rate monitor that puts real-time, lab-grade accuracy on your wrist, bars and screen. The soft, adjustable chest strap reads straight from your heartbeat for tight ±1 BPM precision across a 30–240 BPM range, so every interval, zone and recovery session is built on data you can trust.
With both Bluetooth 4.2 and ANT+, the H303 pairs seamlessly with bike computers, smartwatches and training apps — connect to multiple devices at once and keep your numbers in sync wherever you train.
- Dual connectivity: Bluetooth 4.2 + ANT+ — works with phones, bike computers and watches
- ±1 BPM accuracy across a 30–240 BPM range for true heart-rate zone training
- IP67 waterproof — sweat-proof and rain-ready
- 1000-hour battery life on a single CR2032 (pre-installed)
- Light & comfortable: 16 g sensor on an adjustable 64–86 cm elastic strap
- Ready out of the box — sensor, battery and strap included
Whether you’re cycling, running, lifting or chasing a new PR, the H303 keeps your effort honest from warm-up to cool-down.
S***z (verified owner) –
The band works perfectly, very comfortable. It doesn’t cause chafing. Easy to set up.
Verified Buyer (verified owner) –
Great product. The hrm works fine, stable data. Pair with garmin edge without issues. Recommend seller.
H***o (verified owner) –
Okay, the cadence/speed sensor is a bit bad but the heart rate sensor is perfect.
a***r (verified owner) –
It feels comfortable and apparently it’s precise, which makes reading much faster. In resistance training, it’s good because it gives you more accurate data than the watch. I paired it with my Garmin Forerunner 955 and it was very easy.
Verified Buyer (verified owner) –
Works flawlessly! No problem pairing to garmin edge
G***t (verified owner) –
I am using it since two months. As other magene products i have (speed and cadence sensors), it works flawlessly. I am using it with a garmin edge 540.
Verified Buyer (verified owner) –
Works great and the quality of the elastic strap is very good and much softer than the one i have with my wahoo strap.
Verified Buyer (verified owner) –
Works well. Well packaged. Looks high quality. Perfect with my Magene ‘606. Very satisfied and easy to connect.
Verified Buyer (verified owner) –
Very good quality for the price. everything fits perfectly and installation was easy. the materials feel solid and well made. shipping was fast and packaging was secure. no issues so far after riding. overall, i’m really satisfied and would definitely recommend this product to others looking for a budget-friendly option.
Verified Buyer (verified owner) –
The equipment matches the description, so I was satisfied. The delivery was very slow. After leaving customs, it took a week to be delivered. I was dissatisfied with the shipping company.
A***a (verified owner) –
All good for now. Pairs perfectly with Garmin. Accurate measurement. Let’s see how long it lasts.