COROS Heart Rate Monitor
COROS Heart Rate Monitor
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COROS Heart Rate Monitor
Highly accurate tracking. And total wearing comfort.
Compatible with any Bluetooth-enabled heart rate device — with up to three simultaneous connections. Up to 38 hours (a day and a half) of continuous and accurate heart rate monitoring. Comfortable to wear and stays perfectly in place. No buttons and automatic skin-detection activation. It just works.
Wearing Comfort
Adjust it once. Then forget it’s there.
Let’s be honest — wearing a chest strap isn’t exactly comfortable. It often slips during long workouts or when carrying a backpack (like in ski touring), and it can even cause chafing. And for women, wearing a chest strap over a sports bra can be especially unpleasant. The COROS Heart Rate Monitor offers high wearing comfort, stays put even during extended training sessions, and doesn’t get in the way. The soft-touch fabric, secure fit with Velcro strap, and smooth design prevent snagging on clothing.
Designed with women in mind. Comfortable to wear on the upper arm, stays in place even during long sessions, with a precise fit and ultra-soft fabric. Guaranteed comfort — especially for those for whom chest straps don’t work well.
Strategic placement. One of the main limitations of optical sensors is ambient light. Wearing the monitor on the upper arm, where there’s more muscle mass and dense blood vessels, offers distinct advantages over wrist placement.
Battery Life
Up to 38 hours of heart rate tracking. And 80 days in standby.
COROS GPS watches are known for their incredible battery life — and the COROS Heart Rate Monitor is no exception. It offers up to 38 hours of continuous heart rate tracking. No ride or ultra-trail event will catch you off guard. Standby time is up to 80 days. Charging is easy with the magnetic charging cable.
up to
38 hrs
of heart rate tracking
Read a detailed explanation of the new technology in the COROS Heart Rate Monitor, a comparison with traditional chest straps, and the accuracy test results conducted by COROS during development.
Why shop at ralpu e-shop
Always in stock
We only sell items physically in stock. Your order is shipped immediately. Delivery usually takes 1–2 business days. No tricks.
Satisfaction guaranteed
We offer a 24-month warranty. If you have questions, expect a prompt and helpful response.
Authorized reseller
Ralpu is an authorized COROS brand reseller in Slovakia with years of experience and thousands of satisfied customers.
Bluetooth Connection
Connect to up to three devices at the same time. And not just to COROS GPS watches.
The modern, forward-looking Bluetooth wireless protocol allows simultaneous connection to up to three devices. And of course, you’re not limited to just COROS GPS watches. Connect to a bike computer, trainer, other watches, or an app on your phone. Reliable and high data throughput. Plus, you can be up to an incredible 120 meters away from the device — all thanks to the modern Bluetooth protocol.
Connect to up to three devices at once. Connect to a bike computer, trainer, other watches, or a phone app — up to three external devices simultaneously.
Range and freedom. Thanks to the modern Bluetooth protocol, you can be up to 120 meters away from your bike computer, trainer, or phone app — and your heart rate data from the COROS Heart Rate Monitor will still be received.
COROS Heart Rate Monitor
What's in the box
COROS Heart Rate Monitor
What's in the box
Technical Parameters
Technical Specifications of the COROS Heart Rate Monitor
| Dimensions & Weight | |
| Physical dimensions | 42.5 x 28.4 x 9.1 mm |
| Weight (sensor only) | 9.7 g |
| Weight (sensor + strap) | 19 g |
| Materials | |
| Strap material | polyester, nylon, spandex |
| Sensors | |
| Configuration | 5 LEDs with 4 light detectors |
| Wearing | |
| Wearing location | bicep |
| Bicep circumference (min. and max.) | 18 – 32 cm |
| Connectivity | |
| Wireless connection (protocol) | Bluetooth |
| Supported external devices | Requires Bluetooth support and the ability to receive heart rate data |
| Number of simultaneous connections | Up to 3 devices simultaneously |
| Battery Life | |
| During heart rate monitoring activity | 38 hours |
| Standby mode | 80 days |
| Battery capacity | 55 mAh |
| Charging time | Less than 2 hours |
| Charging cable | USB-A (input) with proprietary magnetic connector (output) |
| Durability | |
| Water resistance | 3 ATM |
| Operating temperature | -20°C to +50°C |