CrazyFire Led Dive Light Cree Led Torch Waterproof Lamp Magnetic Control Switch Power by 1 x 18650 Battery. The best choice as your back-up or primary light.Features: Regulated power supply can maintain constant output. Super big lanyard hole design for bolt snap mount. Three O rings design to make it depth to underwater 200 meters. The crust is made of durable Aircraft-grade aluminum. 5 mm Toughened glass can stand higher water pressure resistance. Specification: Brand: CrazyFire Model: DIV05 Color: Black Led Type: CREE XM-L2(U4) Beam Distance:270M Material: Aluminum alloy Diving depth: 200M Net Weight: 195g Underwater Weight:105g Working Voltage:3-4.2V Dimensions: 40mm(Head dia.)*26mm(Body dia.)*32mm(Tail dia.)*142mm(Length) Situations: Daytime: Even during the day, everything would look gray at 30 feet underwater. A powerful flashlight could illuminate the dazzling colors underwater. Nighttime: For maximum visibility in nighttime, a bright beam will penetrate the darkness. Low visibility: In low visibility condition, the light is powerful that won't impair vision. Under Ledges: For searching under ledges, this flashlight is small enough to place in cramped areas and emit a narrow penetrating beam to illuminate the farthest corners. Package list: 1 x Diving Flashlight 3 x Spare O-rings 1 x Lanyard 1 x User Manual Warranty & Customer Service At CrazyFire, we believe in our products. That's why we back them all with an 12-month warranty and provide friendly, easy-to-reach support.If there is any problem, please free to contact us ,we will reply you within 24 hours.H-Zone Technology Co.,Ltd