Compatible with instruments using the NMEA language
UV stable salt fog-resistant aluminum alloy design
speed-signal-processing and upgraded 5 Hz (5X per second) speed-through-water enhancements provide excellent paddlewheel accuracy below 5 knots (6 MPH) and smooth linear output at all vessel speeds
Universal USB charging capability
Garmin BlueChart g3 HD - HXEU047R - Gulf of Bothnia - Kalix to Grisslehamn Boat Finn Compatible with instruments using theBlueChart g3 HD HXEU047R Gulf of Bothnia Kalix to Grisslehamn microSD SD Coverage: Detailed coverage of the Gulf of Bothnia frome Gavle, Sweden through Pori, Finland, including Oulu and Vaasa, Fin. Sweden coverage includes Lulea Skargard, and lakes Tjeggelvas, Hornavan, Aisjaur, Fluka, Uddjaur, Storavan, and Storsjon well as coverage of the lower Dalalven from Gysinge to Soderfors. Detailed coverage of the islands of Hailuoto, Vallgrund, and Aland is