- Large LCD display for easy reading of speed, distance and riding time on the go. - Compact, lightweight, wireless and waterproof design for convenient, durable use without cables. - Measures speed, distance and riding time; ideal for serious cyclists and fitness enthusiasts who want clear data. - Day and night backlight with green and white colors to distinguish lighting conditions; note that a slight rattle from the wireless function is normal. - Fashionable design: small, lightweight, multi-function; acts as a bicycle speedometer and odometer. - Wide compatibility: suitable for all bicycle types including road, mountain, folding and standard bikes. Use scenarios: - City commuting: monitor speed, distance and ride time to track daily goals. - Road or mountain rides: waterproof, wireless setup keeps the display clean and reliable on rugged routes. - Training sessions: log speed, distance and riding time to measure progress over time.