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: 256 level color TFT
Weight: 7.5 oz ( 213 g) with batteries
Battery: 2 AA batteries ( not included)
Battery life: 18 hours, typical
Waterproof: yes ( IPX7)
Floats: no
High-sensitivity receiver: yes
PC interface: serial and USB
RoHS version available: yes

Maps & Memory:
Basemap: yes
Preloaded maps: no
Ability to add maps: yes
Built-in memory: no
Accepts data cards: 64 MB microSD card ( included)
Waypoints/ favorites/ locations: 1000
Routes: 50
Track log: 10, 000 points, 20 saved tracks

Features:
Automatic routing ( turn by turn routing on roads) : yes
Electronic compass: yes
Barometric altimeter: yes
Geocaching mode: yes
Outdoor GPS games: yes
Hunt/ fish calendar: yes
Sun and moon information: yes
Tide tables: yes
Area calculation: yes
Custom POIs ( ability to add additional points of interest) : yes
Unit-to-unit transfer ( shares data wirelessly with similar units) : no
Picture viewer: no