Features: 1. Wireless and waterproof design with multi-function display showing speed, distance, time, and more. 2. Clear LCD screen with backlight for easy reading in low light or darkness. 3. Displays current speed and includes maintenance reminders to help keep your bike in good condition. 4. Simple and tool-free installation, making it easy to mount and replace. 5. Durable ABS housing that resists impact and wear. Product Details: Package Includes: 1x Cycling computer (battery not included), 1x Cable tie, 1x Wheel accessory, 1x Rubber gasket, 1x User manual (English) Specifications: Material: ABS Voltage: DC 3V Battery: 1x CR2032 (not included) Operating temperature: -10 to 60°C Size: 5.5 x 4.5 x 4.5 cm