Feel confident on every dive knowing the Nautilus Marine Rescue GPS is clipped securely to your gear. This compact, easy-to-use device is purpose-built for divers and boaters, sending your exact GPS location directly to nearby vessels and the NSRI (National Sea Rescue Institute) all with a single press of a button. Whether you're swept by a current or surface far from your dive boat, the Nautilus broadcasts a distress signal using AIS and DSC technology, alerting vessels within a range of up to 55km, even without satellite signal or mobile coverage. Waterproof to 130 metres, positively buoyant and rugged enough to handle harsh marine conditions, the Nautilus is your silent underwater safety companion.