The top of the line Planet Bike 9 function computer with MacroMonitor LCD four-line display is packed with features: Current speed, ride time, distance, dual odometer with ATB and road tire indicators, average speed, max speed, clock, temperature and speed comparator. Waterproof and heavy duty. The digital Wireless Technology eliminates messy wires. Black. Specs Weight: (w/ bracket & sensor) 88 grams Size: Case size 40 x 55mm Height: (w/ bracket) 27mm Instalation manual, please see: Downloads