Specification :

Physical & Performance:
Unit dimensions, WxHxD: 2.4 " x 6.1 " x 1.3 " ( 6.1 x 15.5 x 3.3 cm)
Display size, WxH: 1.5 " x 2.2 " ( 3.8 x 5.6 cm)
Display resolution, WxH: 160 x 240 pixels
Display type: 4 level gray LCD
Weight: 7.0 oz ( 198 g) with batteries
Battery: 2 AA batteries ( not included)
Battery life: up to 28 hours
Waterproof: yes ( IPX7)
Floats: no
High-sensitivity receiver: no
Interface: serial and USB
RoHS version available: yes