Nauticalia

This Swiss-made, ultra-tough watch - originally designed for the US Navy Seals and now popular with special forces and divers worldwide - has a simple but very effective (unique) special feature: night illumination that lasts ALL NIGHT. You won't have to find any buttons, it doesn't run the battery down, and it doesn't need "charging" from another light source. Its fibre-reinforced casing and strap are light and comfortable to wear, whilst the hardened mineral glass is highly resistant to scratching. The Tritium gas light sources (also called Traser) maintain their glow for at least ten years. It has a one-way rotating diver's bezel and is water-resistant to 200m (660ft). Swiss-made by Luminox, superb quality.

Roger Barnes, DINGHY SAILING magazine, wrote "most luminous watches only work for about an hour before they need to be refreshed by an external light source, which is hopeless. I have never regretted investing in one with Tritium markings that glow all the time, as used by the US Navy Seals & Special Forces worldwide". (He bought one himself!)