SUNDING SD-581A Bike Wired Computer Speedometer Odometer Cycling Bicycle Waterproof Measurable Temperature Stopwatch

This speed and cadence sensor accurately track and transmit essential cycling data for you, giving you real-time monitoring of your outdoor exercise. Main Features: 1. Precise measurement. Display your current speed, average speed, max speed, time, trip time, distance, etc. 2. Able to set km/h or m/h unit, 12 hours or 24 hours clock mode by yourself. 3. Old-fashioned wired design for maximum reliability. Avoid electromagnetic interference from your phone or other radio signals. 4. Powered by one 65mAh AG10 battery. Ensure long-time endurance. 5. Lightweight and compact. A great tool for outside cycling. Specifications: 1. Battery: built-in 65mAh AG10 battery 2. Riding time: ranging from 0:00:00 to 99:59:59 3. Bicycle spoke diameter: 2mm and less 4. Operating temperature: -20 Deg.C to 70 Deg.C Package includes: 1. Bike computer * 1 2. Cable ties * 1 3. English manual *1 4. Magnet *1 5. Sensor +mounting shoe *1