Features: 1. Small size, light weight, and wireless waterproof design make bicycle odometer more convenient and durable. 2. Ordinary bicycles such as road bicycles, mountain bicycles, and folding bicycles are compatible with this bicycle odometer. 3. Large LCD display allows you to easily read statistics from bicycle odometer. 4. A multi-purpose meter can measure speed, time, mileage, heart rate, and cadence. Sea waves, slopes, etc., escort your journey. 5. Support four-star positioning, Beidou, GPS, GLONASS, positioning more quickly and accurately. This product is a multi-purpose meter can measure speed, time, mileage, heart rate, and cadence. Sea waves, slopes, etc., escort your journey. Specifications: Screen Size: 1.8 inch Battery Type: Rechargeable Lithium Battery Battery Life: 25Hours IP Rating: IPX7 Screen Type: LCD Display Positioning: GPS/BeiDou/Glonass Package Included: 1 * Bicycle odometer Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!