H613 Heart Rate Monitor

Track heart rate with millimeter accuracy, stay protected by intelligent alerts, and train strategically with 5-color zone indicators. Seamlessly connect three devices via 3-channel Bluetooth, and choose from 3 tailored sizes for a perfect fit. The H613 heart rate monitor isn’t just a sensor - it’s your invisible coach and performance partner, guiding every step of your journey.The H613 heart rate monitor features a new-generation self-developed heart rate algorithm. Different from traditional optical sensors that rely on indirect monitoring, it adopts proximal ECG signal direct acquisition technology - to track heart rate fluctuations in real-time. Combined with dynamic noise-reduction filtering technology, it eliminates abnormal interference signals even during high-intensity interval training or sweat-intensive cycling, enabling millimeter-level precision in heart rate tracking.Features & BenefitsMulti-device wireless connectivity: Supports ANT+ and bluetooth to share heart rate data with up to 3 devices simultaneouslyAnti-bacterial, anti-odour, and anti-slip design: Keeps the strap fresh and secure during intense or long workouts while ensuring stable, accurate heart-rate tracking.Ergonomic curved design: 10.8 - 8mm curved design conforms to the chest for millimetere level dynamic tracking and friction free movementIPX7 waterproof rating: Suitable for intense training sessions, rain, and sweat‑heavy workoutsExceptional battery life: Up to 100 hours of use from a rechargeable lithium batteryMulti-size fit: Three size options ensure accurate, comfortable support for athletes of all body types.17h Offline Storage: Unrestricted Training, No Data LossA built-in storage chip supports 17 hours of offline recording. During outdoor cycling, mountain hiking, or gym workouts, the sensor operates independently, with no need for a phone or connected device - continuously tracking heart rate fluctuations. After your session, connect to the OnelapFit app to automatically sync and view a complete report (including workout duration, calories burned, average/max heart rate, heart rate zone distribution, etc.).Smart Heart Rate Alert, A Safety Boundary for Every BreakthroughThe H613 heart rate monitor is equipped with a heart rate warning function that supports customizable safe heart rate thresholds. When the heart rate reaches the preset value during exercise, the sensor triggers a synchronous buzzer alert, sounding a timely "fatigue alarm" to avoid cardiopulmonary overload risks. Like an "invisible coach," the H613 heart rate monitor uses data to build the line of defense for sports safety.Technical SpecificationsDimensions: 61.1x28.9x10.8mmChest strap lengths: Short (58-78cm) / Medium (75-100cm) / Long (93-136cm)Waterproof grade: IPX7Wireless protocol: Bluetooth (up to 3 simulatneous connections), ANT+Weight: 12.4g (sensor only)Battery type: Rechargeable lithium batteryCharging method: Magnetic charging