Yueling@ Super Bright Waterproof 3 x XM-L L2 Diving Flashlight 3500 Lumen Lights for Underwater Diving, Scuba Led Flashlight Flash Light (Black) Output bright can come to above 3500 lumens. Internal wiring applies the high efficient booster circuit, and can utilize the batteries in the lar. The body of this flashlight is built of aircraft-grade aluminum alloy, and it has a very solid const. Hard-anodized finish, anti-abrasive, free-scratch, shock-proof. Ultra-deep trench skid-proof effect is excellent when diving.