ATTENTION! Translated by a computer translator.

Precise arm strap heart rate sensor: optical sensor technology for a high-precision heart rate monitor that has been tested millions of times and has an accuracy of up to ±1 bpm. It records heart rate data in real time during exercise and analyses your fitness data to maximise your training results Bluetooth and ANT+ dual mode: the heart rate monitor becomes your fitness tracker, connects to various fitness equipment and fitness apps. Whether outdoor fitness training or indoor cycling or group training, the heart rate and calorie consumption are precisely determined. LED light reminder: HW401 heart rate sensor has a flashing LED light that confirms your heart rate and connection. Turn-on: LED light will flash blue quickly until the heart rate was found, then the blue light will flash slowly. Turn-off: red LED flash, enter the shutdown state. Sweat and waterproof: IP67 waterproof effectively prevents sweat and water from entering the device during training. The moofit HW401 heart rate monitor can be used for almost all sports, cycling, running, hiking, yoga, fitness, strength training, but is not suitable for swimming. Ultra long battery life: The HW401 heart rate monitor bracelet comes with a rechargeable battery and a magnetic charging cable. Allows up to 20+ hours of continuous operation on a single charge, meets the requirements of long-term training or competition. Save a lot of money on the battery! New design: the heart rate sensor weighs only 7.7 g, the comfortable and skin-friendly bracelet can be adjusted up to a length of 37.8 cm / 14.9 inches. Compared to a bulky chest strap, a breathable and lightweight heart rate sensor for the bracelet is the perfect choice. Our best place to help you.