- Great for detecting the heart rate changes for sports, adjust the sports strength more conveniently and - avoid accidents that may result from an abnormal heart rate - 8 kinds of measurement functions: riding speed, average speed, maximum speed, riding distance, riding time, timely heart rate, maximum heart rate, time - Detect calories and fat consumption - Wire control button, anti-interference - Shock proof , Waterproof, lightweight, durable - 20 Functions , includes all vital functions for novices and pros alike. - Ideal for bicycle training and doing exercise, make sports life more free and comfortable - Easy installation, no tools required - Fit any Bike fork size any handle bar size - Including all accessories Color: black Speedometer dimensions: total length: 57mm, total width: 45mm, screen length: 34mm, screen width: 31mm Transmitter dimensions: length: 41mm, width: 46mm Heart rate belt dimensions: length: 270mm, width: 34mm Operating voltage: 3V (CR2032 battery) Features (20 functions) : Metric (Km / Kg) / Imperial (m / Lb) Tire circumference setting (0mm ~ 9999mm) Initial total mileage setting Maintenance alert setting and function Weight unit and setting Heart rate threshold setting (80-180 beats / min) Clock setting (12H / 24H) Riding parameter reset Instantaneous riding speed Contrast prompts Riding total mileage (0-99999 km / mile) Single mileage (0-99999 km / mile) Maximum speed Average speed Riding timing (0: 00: 00-9: 59: 59) Calories consumption (0-99999Kcal) Fat consumption (0-9999.9Kg) Automatic cycle Power-saving mode Heart rate strap Accessories: heart rate strap, transmitter, wire control button, base, tie, stopwatch, magnets, batteries, user manual 1 x Speedometer 1 x Transmitter 1 x Heart rate strap 1 x Chest strap 1 x Base 1 x Magnet 1 x Ties set 3 x CR2032 button battery 1 x English user guide In original package-