Outdoormaster Wireless Bike Computer, Waterproof Multifunction Cycling Speedometer With Backlit Display The OutdoorMaster Promise: 100% Satisfaction Guarantee. MULTIFUNCTION BIKE COMPUTER: Easy to Use, Measures speed, distance, riding time, temperature and more. WIRELESS AND WATERPROOF DESIGN: Durable design and easy installation without need for wiring. BACKLIT DISPLAY: Display with backlight allows for perfect readability, even for night time cycling. What You Get: OutdoorMaster Wireless Bike Computer, our customer-favorite 6-month warranty and friendly customer service.