NAVnet Digital Network Fish finder 

Great Fishfinders

The TZtouchXL is equipped with a powerful internal 1kW TruEcho™ CHIRP™ fishfinder. For many, this is the perfect fishfinder, but some may need even more power. The powerful TruEcho™ CHIRP DFF3-UHD delivers all the fishfinder power you will ever need, giving you clear, crisp echoes at any depth, and stunning clarity of fish targets and bottom structure.
* Internal fishfinder only available on the TZT10X/13X/16X - can be paired with the TZT22X/24X.