SecurityIng&reg; 3X T6 LED 4000Lm Diving Waterproof Flashlight with Battery and Charger This flashlight uses of 3X Cree XM-L T6 LED, producing very bright beam of light, the output brightness can achieve to 4000 lumens. This Flashlight has 5 switch modes: high / middle / low / strobe / sos. 4 O-Rings around body and the seal effect is great. Making it can work properly when you dive, ultra-deep trench structure design, skid-proof effect is excellent when dive. Most important, the flashlight is specially designed for diving. A wonderful diving flashlight. The body of this flashlight is built of aircraft-grade aluminum alloy, and it has solid construction, hard-anodized finish, anti-abrasive, free-scratch, shock-proof.