SL-3 is a three LED light head for diving. Measured true light output of the torch is 2800 lumen and which narrow beam angle provides plenty of light in all conditions. Beam angle of the light is about 7° making it very good choice for demanding conditions. A Spring loaded power switch is located at the rear end of the light head around the power cord. There are 20/40/60/80/100% power output selections giving you an option to adjust the amount of light to the conditions. Light head is made of anodized aluminum with top quality components.