Shearwater manufacture very high quality technical dive computers used all over the globe and are the go-to brand for many advanced divers. Started in 2004 Shearwater Research Inc. has been lead by their CEO Bruce Partridge who is an advanced Closed Circuit and Open Circuit Technical diver with a strong knowledge of programming skills. Shearwater dive computers are aimed at demanding technical divers and are built by technical divers too so they know what features are required and what divers are looking for. Designed and manufactured in Vancouver Canada Shearwater's facility is certified to ISO 9001-2008 and their products meet international standards as required by CE, FCC and IC. Our Simply Scuba collection of Shearwater computers features the Petrel, Perdix and NERD which are made to be simple and powerful with smart menus that change at different times of the dive so the first thing you select is most often what you want at that time without having to cycle through all the other menu items.