Fred Pro Max is the flagship of the range, built for tracking vehicles and assets. It has a built-in heavy-duty magnet that grips straight onto metal, an extra-large battery for long life, and dual-network tracking for accurate location. No accessories needed. Great for: Cars, trailers, toolboxes, machinery and anything metal. Best for tracking vehicles and high-value assets where you want long battery life and a tracker that mounts itself. Features at a glance Built-in heavy-duty magnet, mounts straight to metal Apple and Google/Android dual-network tracking Extra-large CR2477 battery for long life Free 3-day location history Share with up to 12 people Rain resistant with a twist-lock lid 2.5-3 years Battery life(depending on usage)