Bluetooth 4.0 Wireless Bicycle Computer By GIYO [ Information ] [Screen]: 2.5inch HD [Compatible With]: Speed/Candence Sensor, Heart rate monitor(not included) [Rechargeable]: 800mAh battery [Mount]: 2 Ways/ handlebar& stem [Name]: Wireless bicycle computer[Backlight]: 3 modes for day & night [Support]: Wireless bluetooth 4.0 [Features] * IML strong Screen, easy to read *IPX5 waterproof level * Multi data supported, like temperature, calories... * Last about 120 hours without the backlight * Available for any wheel size * WithInstructions in Chinese, English, German, Spanish, Korean, Japanese, Russian BASIC INFORMATION product size WATERPROOF IPX5 BACKLIGHT switchable 3 modes backlight, Easy to read on day & night MULTI DATA SUPPORTED AVG, MAX,DST,ODO, CAL,TRIP,TOT,WS,WGT... RECHARGEABLE work about 120 hours without the backlightWIRELESS CONNECTED compatible with speed/cadence sensor, heart rate monitor (not included) INSTALLATION valid mount distance PACKAGE INCLUDED include all the accessories needed