... , UTM, Loran TDs, Maidenhead, MGRS, user grid, and more Waterproof: Yes, to IPX7 standards (submersible in 1 meter of water for up ... minutes) Batteries: 2 AA (not included) Battery life: Up to 20 hours Sensors: Electronic compass, barometric altimeter Interface: USB and ... x H) Display resolution: 160 x 240 pixels Water-resistant : Yes, to IPX7 standards (submersible in 1 meter of water for 30 ...