The Bicycle Computer is ideal for cycling enthusiasts. Features: Tracks and displays speed, time, distance, and multiple data points instantly. LCD screen for clear visibility during cycling. Water-resistant design allows use on light rainy days (do not submerge in water for extended periods). Made of high-quality ABS material, durable and practical. Easy assembly with no tools required. Functions: SPD: Current Speed ODO: Kilometer Counter DST: Trip Distance MXS: Maximum Speed AVS: Average Speed TM: Elapsed Time CLK: Clock "+" "-" Comparator Speed Scale (km/h, m/h) Set Tire Outline: 0mm-9999mm Set The Last Value of Odometer Counter/ODO Auto ON/OFF Alert Maintenance Specification: Material: ABS Size: 5.0 x 4.5 x 1.5cm / 2.0 x 1.8 x 0.6in Power source: 1 x 1.5v 80mAh LR1130 battery (included) Package weight: Approx. 65g / 2.3oz Package List: 1 x Bike Computer 1 x Mount 1 x Sensor 1 x Magnetic Screw 6 x Fixed Straps 1 x LR1130 Battery 1 x Instruction Manual