Humminbird Helix 7 Chirp MSI+ GPS Gen 4 inc Nav card - 2 Versions - P/N 104548AU and 104552AU.

Formulated for use on all marine electronics, both touchscreen and non-touch, and all plastics. It contains PTEF polymers that provide a protective barrier and help protect against U.V. damage. Removes and help prevents fingerprints, dirt, dust and salt deposits. Great for sunglasses, phones, tablets and more.

We don't normally advertise books but this is a good one and worth a read. This evidence based book explains how colour echo sounders work, how to operate them and how to interpret the information recorded on the display monitor. Packed full of over 130 images including screen captures, diagrams and full colour photos, this easy to read and understand book will help even the most experienced fisher gain more from their colour echo sounder/fish finder. John Adams comes from a seafaring family where all the men went to sea, serving on merchant ships, deep sea trawlers, or whalers.

Over 3000 GPS marks around Australia (coast and offshore) plus how to use a GPS tips and tricks. GPS Fishing Marks Australia Wide is an invaluable companion to all anglers-it is the complete guide on how to understand, use and get the best from your GPS, then it tells you where to find the hottest fishing spots around Australia. Almost every angler who fishes on the water around Australia either uses a GPS (Global Positioning System) or wishes they did! However, many users find mastering their GPS difficult. Using these instructions the GPS enables anglers to determine their latitude and longitude out on the water as well as helping them to navigate a boat to a particular set of co-ordinates.