This is the perfect all rounder. Small enough to fit in a BCD pocket, bright enough to use as a primary light, enough battery capacity, and robust enough to use all day every day.  But it's also compact and economical enough to use as your backup if you're using a canister light. 

Features:

• Output of 1050 Lumens makes this a seriously bright dive light
• Anodised aluminium body
• Depth rating of 200m
• Triple o-ring seal
• Switch - twist on/off
• LED -  CREE XM-L2  

Package Includes: 

• Panasonic 3400mAh Li-ion battery (most dive lights come with 2200 or 2600mAh batteries) 
• Lanyard
• Spare set of o-rings
• USB charger