This is a high-quality bike odometer featuring a 2.8-inch large screen that measures temperature and speed. The easy-to-read LCD display includes a backlight for clear visibility in low light conditions. Designed for simple operation and secure installation with included mounting accessories. Ideal for cycling, hiking, climbing, and other outdoor activities. Features: - 2.8-inch large screen displays temperature and speed - Bicycle odometer with LCD backlight function - Portable, practical, and convenient with durable construction for long service life - Large-screen LCD display ensures clear data visibility - Easy to operate and securely install using included mounting accessories - Suitable for use during cycling, hiking, climbing, and other outdoor activities - Great companion for bicycle training - Includes time display function and can be used as a practical travel gadget Specifications: - Name: Bicycle Odometer - Type: A, A-wireless, B, B-wireless, C (optional) - Backlight color: Green - Waterproof: Yes - Battery: 1 * CR2032 button battery (wired type), 2 * CR2032 button batteries (wireless type), 3.0V, 240mAh (included) - Item size: 75 * 50mm / 2.95 * 1.97in - Package size: 110 * 70 * 60mm / 4.33 * 2.76 * 2.36in - Package weight: A: 129g / 4.55oz A-wireless: 139g / 4.90oz B: 105g / 3.70oz B-wireless: 112g / 3.95oz C: 139g / 4.90oz Packing List (A): - 1 x Bicycle Odometer - 1 x CR2032 Battery - 1 x Magnet - 1 x Extension Mount - 1 x Sticker - 2 x Ties - 1 x Binding - 1 x Manual Packing List (A-wireless): - 1 x Bicycle Odometer - 2 x CR2032 Battery - 1 x Magnet - 1 x Sensor - 1 x Extension Mount - 1 x Stickers - 2 x Ties - 1 x Binding - 1 x Manual Packing List (B): - 1 x Bicycle Odometer - 1 x CR2032 Battery - 1 x Magnet - 1 x Extension Mount - 1 x Sticker - 2 x Ties - 1 x Binding - 1 x Manual Packing List (B-wireless): - 1 x Bicycle Odometer - 2 x CR2032 Battery - 1 x Magnet - 1 x Sensor - 1 x Extension Mount - 1 x Stickers - 2 x Ties - 1 x Binding - 1 x Manual Packing List (C-wireless): - 1 x Bicycle Odometer - 2 x CR2032 Battery - 1 x Magnet - 1 x Sensor - 1 x Extension Mount - 1 x Stickers - 2 x Ties - 1 x Binding - 1 x Manual