Lamps and torches

Review of the OrcaTorch D570

The OrcaTorch D570 can also be used as a spot beam for underwater photography. Photo by Kate Jonker.

How many times, whilst diving, have you seen the most exciting, unusual or incredible critter and wanted to show it to your buddies? You have finally managed to grab their attention and pointed at the critter, only for them to look in the direction of your pointed finger and then stare blankly back at you.

Poseidon's new Solid State Sensor (SSS)
Poseidon's new Solid State Sensor (SSS)

Poseidon Announces "Game-changing" 'Solid State Oxygen Sensor'

In early 1968 John Kanwisher and Walter Stark met by chance. They soon learned that each man had been considering the feasibility of a mixed gas closed circuit rebreather (CCRB) using electronic sensors to control the Partial Pressure of Oxygen (ppO2). They collaborated and the result was the Electrolung.