High sensitive GPS receiver. Waterproof. Colour screen. 24mb internal memory. Electronic compass. Barometric altimeter. Geocaching friendly. Compact. Display size 3.3 x 4.3cm. 500 waypoints. 500 waypoints in route. 10,000 track points. 50 reverse routes. Size (H)5.6, (W)10.7, (D)3cm. Weight 156g. 14 hours battery life. 2x AA batteries required (not included).