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 with backlight ensures clear visibility of data in various lighting conditions. Designed for simple operation and secure installation with included mounting accessories. Ideal for use during hiking, climbing, cycling, 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 for clear reading - Easy to operate and install securely using mounting accessories - Suitable for hiking, climbing, riding, and other outdoor activities - Ideal companion for bicycle training - Time display function; can also serve 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