Perfect for your outdoor cycling games. Features: Wireless bicycle computer with LCD display. Monitor speed， distance and riding time of your bike. Easy to install and set up. Functions: ODO: Odometer DST: Trip Distance AVS: Average Speed MXS: Max Speed RTM: Riding Time Temperature(-20 ~ 70℃) Calories Fat Burned FFM: Freeze frame memory 1ATM water resistant Wireless Transmission Specifications: Material: ABS Color: Black Power Source: CR2032 Battery Battery Lifespan: over 1 year Wireless Working Frequency: 110K(+/-10K)Hz Working Temperature: -20 ~ 70℃ Item Size: 6.5 * 4.5 * 2cm / 2.56 * 1.77 * 0.79in Item Weight: 40g / 1.40oz Package Size: 13 * 7.2 * 4.7cm / 5.12 * 2.83 * 1.85in Package Weight: 108g / 3.80oz Package List: 1 * Bicycle Computer 1 * Transmitter 1 * Bracket 1 * Magnetic Screw 2 * Pads 4 * Cable Ties 1 * User Manual(English)