Velocímetro para bicicleta de montaña con luz azul

product description] ★ 28 major functions★ Blue luminous★ Shundong SD-558A code table [Model] SD-558A [Material] Engineering plastics, LCD display, electronic components, etc. [Display] Double row and four window display (pictured) [Size] Product size 9 * 4.5 * 1.5CM; display size 7.3 * 1.7CM; line length is about 82CM [Power] 1 CR2032 button battery (inclusive) [Packing] Color box elevator [Annex] A copy of the original Chinese manual [The main function] ● Dynamic display of mileage, riding time, real-time speed, travel time, current time, current date; ● Query speed, average speed, total driving time, total mileage, current temperature at any time; ● With luminous function, using high-brightness cold light source, you can check the information at night at a glance (17: 00-8: 00 in the morning, press any key to turn on the backlight, it will automatically extinguish after about 4 seconds.bright); ● With metric / imperial unit selection, suitable for different users at home and abro ad; ● Vehicle refueling / maintenance tips to ensure that your car has good performance and life; ● With 12/24 hour system, Celsius / Fahrenheit temperature unit selection, perpetual calendar function, let you travel more sure; ● With a stopwatch function, allowing you to accurately grasp the game information; ● With speeding reminder function to make your driving safer; ● Wide range of application, suitable for use on 4 "-40" bicycles / electric vehicles, even motorcycles; ● Speed comparison indication, keep track of speed changes at any time; ● Using sensor, stable performance, accurate speed, ultra wide working temperature; ● Ambient temperature display, clock function; ● Automatic standby function ● Fashion exterior design, rainproof design, easy to wipe, easy to disassemble;