GearNews - Bigblue TL 4000P Dive Light
It’s a self-contained technical light boasting a narrow 10° beam angle with a maximum output of 4000 lumens delivered at a colour temperature of 6500 Kelvin.
The light is powered by a lithium-ion rechargeable battery-pack providing up to a claimed 30 hours’ burntime. The TL 4000P has an anodised aluminium alloy body and is depth-rated and tested to 100m. It weighs 596g with its batteries and costs £350.