Humminbird AS GPS HS Precision GPS Receiver with Heading Sensor,

Authentic Humminbird product. Excellent price

Works as advertised. Installed up front with my Helix 12 SI. I now have a better gps signal and a stationary heading indicator. Follow the online video on how to program your Helix to use this external sensor in lieu of the internal sensor in the Helix head unit.

easy to install, works flawlessly and the best price I could find with fast shipping. What more cold you ask for!

Works as advertised. Great price.

This thing is amazing. When I mark brush piles its so easy to go right back to them even at slow speeds.

As discribed

Happy Husband, Happy... life?wife?

Vastly improved the accuracy of my Helix 10 Mega. Great Product.

Increases accuracy to within a few feet of pin points.

works great