Solar Power Wireless MTB Mountain Road Bike Waterproof Computer Cycling Equipment Digital Stopwatch Bicycle Riding Speedometer Odometer Specification:Brand: Material: PVC Size: 72x36x13mm/2.83x1.42x0.51in Weight: 93g(set) Application: Road bike, mountain bike Whether waterproof: Daily waterproof Language: display five languages (English, German, French, Dutch, Spanish) Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement. 2 X Button Batteries 1 X Mount Bracket 1 X Sensor 2 X Rubber Sheets 4 X Plastic Tapes 1 X O-shaped Ring 1 X Bicycle Computer