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GPS II
Multitrace operating systam contunuously tracks and used up to 8 satelites for fast, accurate ppostioning. Dedicated keys for zooming  from .2 to 360 miles. 2.32"Hx 5"Lx6"W. 9 ounces with batteries 4 AA or 10-36 VDC, .75 watts. Wrist strap

GPS II Plus
The GPS II Plus powerful Phase Trac 12, twelve parallel channel receiver, tracks and uses up to twelve satellites. Didicated key for zooming map display from .2 to 320 miles. Rugged construction with locking rubber battery cover. 2.32"Hx5"Lx6"W
9 ounces with batteries 4 AA or 10-32 VDC Wrist strap.

GP12XL
PhaseTrac 12. Large memory holds 500 waypoints or 20 routes of up to 30 waypoints each. 2"Wx5.8"Hx2"D 9.5 ounces with batteries 4AA or 10-40 VDC GPS 12XL receiver User's manual, carrying case and wrist strap

GPS 38
MultiTrac 6.15"Hx2"Wx1.23"D. 9 ounces with battery 4 AA or 5-8VDC. GPS 38 receiver, wrist stap, user's manual and quick reference guide.

GPSMAP 175
PhaseTrac 12. Garmin G chart inland water and offshore cartography and a built in worldwide Navionics, database provides seamless coverage anywhere you go. Innovative TracBack. Large, electroluminescent backlite, grayt scale 4 level and panning capabilities. 7.6"Hx2.9"Wx2.1"D. 1.4 punds. Power source 6-40VDC or 6 AA's GPSMAP 175 Chartplotting receiver, owner's manual, quick reference guide, carrying case, wrist strap.