The STRB-3K is a rechargeable LED dive strobe built for unmatched visibility and reliability underwater. With a massive 3600 lumens output and a wide 270° beam, it floods the surroundings with a powerful strobe signal that boosts safety and makes underwater communication clear and unmistakable. Operation is simple and dependable, thanks to a glove-friendly body-mounted push button designed for quick activation when it matters most. Light source 3 x LED. Light output 3600 Lm. Blinking frequency 120 pulses per minute (power above 20%). 60 pulses per minute (power below 20%). Casing material Aluminum alloy. Anti-corrosive anodized. Power source Li ion Rechargeable battery pack 18650. Angle of light beam 270°. Color temperature 6500K. Burn time 8 hrs. Maximum depth 150 m tested. Size Dia. 40 x L. 139.5mm. Weight in air 179 g (including battery). Buoyancy in seawater -88 g (including battery). switching system Push button with battery indicator. Included Battery Pack. USB Charger. Lanyard. 3L Outdoor Dry Bag.