The GD-101 provides a GPS back track function in a handheld device with IPX4 water resistant protection. This device can be utilized to take you back to a point on your path that has been set as a destination or a favorite, you can view your co-ordinates, and use this device as a compass (e-compass functionality).. Set up to 5 Destination Points. Display directions with Digital Arrow. Magnetic North Direction Indication; present coordinates display. Manual Setting of Destination Coordinates. Maximum Destination Distance Showing (0 999.99. GPS fix status indication. 3 Kinds of Distance Unit: km/mi/nm. Time Zone Setting/ Date and time display. Uses: (2) AAA batteries (batteries no included). Battery life can last for up to 18 hours in ideal conditions. The battery life can be lengthened under power saving mode.. Simplistic menu functions. Battery Power Level Indicator. Backlit ScreenPACKAGE CONTENTS: GD-101 GPS Director. CD. Lanyard. Quick Start Guide