Never loose anything overboard again. Clip the Waterbuoy to practically anything under 2.2 lbs. If it falls in the drink, it?ll come to your rescue when you need it. The patented trigger mechanism of the Waterbuoy is designed to activate the device seconds after submersion in normal temperatures. This means your valuable won't drift or sink too far before they resurface. Underwater currents can carry things a long way from where you dropped them in a short time, and we aim to minimise the problems this can cause. The Waterbuoy is also designed to minimise the chance of accidental activation. You don't want it going off if you get a bit of rain on it. During our exhaustive trials, we splash tested Waterbuoy continually over 1 month. We then dropped it in a tank of water and it worked perfectly. Waterbuoy is visible at night. More than 80% of items lost overboard are lost in less than perfect light. Usually when loading or unloading the boat in the early morning or late in the evening, as well as being a nightmare for night fishermen. Designed using a special balloon and seals, the Waterbuoy stays afloat for 24 hours, flashing away, giving you plenty of time to find and recover it - day or night.