Bicycle Computers Wireless Bicycle Computer with Stem 2 in 1 Waterproof Mountain Bike Stem with Computer with LCD Backlight Display Bike Speedometer and Odometer for Mountain BikeThis waterproof wireless bicycle computer is integrated with bicycle stem, which makes it secure and convenient for easy installation. It can accurately count speed and distance of your cycling. Features: Large screen with LCD backlight provides high visible during day and night. 18 powerful functions to meet your different riding needs. 2 in 1 design: Built-in wireless computer and stem are integrated. Touch mode allows you to control the bike computer more easily by touching. Aluminum alloy for lightweight, strong and durable. With secure and convenient stem for easy installation. IP67 waterproof effect makes it work anytime and any weather. Suitable for most mountain bikes(handlebar diameter: 31.88mm/1.3in; stem diameter: 28.6mm/1.1in.) Specifications: Material: Aluminum alloy Battery: CR2023 button battery Protect Rate: IP67 Color: Black Screen Diameter: 40 * 30mm / 1.6 * 1.2in Package Size: 160 * 63 * 63mm / 6.3 * 2.5 * 2.5in Package Weight: 318g / 11.2oz Functions: Backlight Current Speed AVS Average Speed MXS Max Speed Speed Tendency Temperature Auto Off/ Auto Wake Up Speed Comparison Odometer Total Mileage Set Single Mileage Riding Time Clock Scan Maintenance Reminder Fat Calories Memory Function Package List: 1 * Stem and Computer 1 * Sensor 1 * Magnet and Screw