The COOSPO HW9 Optical Heart Rate Armband offers a comfortable, highly accurate alternative to traditional straps, featuring instant visual zone feedback and vibration alerts for safer training.

For many athletes, tracking heart rate is essential, but the method of doing so is often a compromise. Chest straps are accurate but can be uncomfortable and chafing, while wrist-based watches often suffer from lag or inaccuracy during intense movement. The COOSPO HW9 bridges this gap perfectly. It is an optical heart rate armband that delivers the freedom of movement you crave with the medical-grade precision your training demands.

Instant Visual Feedback with Zone Training

One of the standout features of the HW9 is its ability to communicate without you needing to look at a screen. It features a built-in 5-color LED indicator that changes color based on your current heart rate zone. Whether you are warming up (Blue) or pushing your VO2 Max (Red), a quick glance at your arm tells you exactly where you stand. This allows you to optimize your intensity instantly, keeping you in the right zone for fat burning or cardio improvement without breaking your flow to check a watch.

Accuracy Meets Comfort

The HW9 uses advanced optical sensor technology to provide data with a monitoring error of just ±1BPM, rivaling the accuracy of uncomfortable chest straps. Because it sits on the forearm or bicep using a soft, breathable strap, it avoids the sensor noise caused by wrist flexion and eliminates the constriction of a chest band. It also supports Heart Rate Variability (HRV) and accurate calorie tracking, making it a comprehensive tool for fitness analysis.

Safety and Seamless Connectivity

Designed for the connected athlete, the HW9 features Bluetooth 5.0 and ANT+ technology. It connects seamlessly to virtually any device—from GPS bike computers and running watches to popular fitness apps like Peloton, Wahoo Fitness, Strava, and DDP Yoga. A unique safety feature is the Max Heart Rate Vibration. Through the Coosporide app, you can customize your max heart rate; if you exceed this limit during a workout, the armband vibrates to warn you, adding a layer of safety to high-intensity training. With 35 hours of rechargeable battery life, it’s ready for your longest ultras or multi-day rides.

The COOSPO HW9 is a fantastic solution for runners, cyclists, and gym-goers who want professional-grade data without the hassle of a chest strap. Its combination of comfort, visual zone indicators, and broad compatibility makes it a smart upgrade for anyone serious about heart rate training.

Where to buy: