1PC Bicycle Computer Waterproof MTB Bicycle Speedometer Wireless Wired Odometer Cycling Watch With LED Digital Screen Stopwatch Brand: SUNDING Color: black, blue, yellow Material: engineering plastic ABS electronic components Use battery type: button battery CR2032*1 Life time: about 500 hours Features: current speed, total driving distance, single driving distance, maximum driving speed, average driving speed, single driving time, total driving time, clock, stopwatch, temperature, driving time counting, driving time counting down, driving distance Forward meter, mileage countdown, comparison reminder, maintenance reminder, speeding reminder, wheel circumference setting, mileage initial setting, total driving time initial setting, driving sampling, battery reminder, automatic cycle, fueling reminder function, smart Backlight function, long light function, switch Waterproof grade: life waterproof Product accessories: base sensor line*1 magnet*1 tie wire*6 instructions*1 Product size: 5.7*4.1*2.0cm Product weight: 85g 1. Data refinement: detailed display of current speed, average speed, maximum speed, time, travel time, distance, etc. 2. Highlight backlight display: FTSN screen, backlight function, used to distinguish between day and night for clear viewing. 3. Waterproof: life waterproof, battery reminder, large screen Chinese and English display can be switched at any time. 4. Easy to use: Wire code table, more convenient to use, longer life, signal interference and updated stronger magnet to ensure the accuracy of data. 5. Super battery life: powered by a button battery CR2032, it can last for 500 hours continuously to ensure long-term travel without dropping the line. Meter head*1, base sensor cable*1, magnet*1, cable tie*6, manual*1 or Meter head * 1, wireless square base * 1, magnet * 1, cable tie * 6, instruction manual * 1, wireless transmitter * 1 or 1 * Code table 1 * Wireless probe 1 * Wireless base 1 * Shock resistant sponge pad 1 * Rubber ring 1 * Strong magnet 4 * Nylon tie 1 * Pure English instruction manual or 1 * Code table 4 * Binding 1 * Rubber ring 1 * Base 2 * Sponge pad 1 * Magnet 1 * Wireless probe 1 * Instructions or 1 * Code table accessories manual