Evodigitals Wireless Bike Speedo Waterproof With 14 Functions - MPH & KMH Current speed - Average speed - Maximum speed - Relative speed - Speed indicator Speed comparator (current/average speed) - Riding time - Riding distance - Odometer Clock (12/24 hour) - Scan - Metric and imperial (MPH and KMH) - Water resistant - Auto start/stop Full instructions included + all batteries and everything needed to get going straight away Full Evodigitals customer support provided