How to Use: 1. Open the torch and install 4 x 18650 lithium batteries (not included) 2. Control the light switch and mode through the switch on the production Item Type: Diving Flashlight Material: Aluminium Alloy Weight: Approx. 525g/1.2oz Size: Length: Approx. 125 mm/4.9in Lamp Head Diameter: Approx. 67mm/2.6in Tail Diameter: Approx. 53mm/2.1in Model: B15 Light Source Specification: 10pcs 5050 White Xml2, 6pcs for XPE Red R5, 6pcs for XPE Blue R5 White Light Position: High, Medium, Low, Long Press for Two Seconds to Turn Off Red and Blue Position: Red Bright, Red Flashing, Blue Bright, Double Click Red and Blue Flashing, Long Press for Two Seconds to Close Colour Temperature: White Colour Temperature: 6000K, Red Wavelength: 620nM, Blue Wavelength: 455nM Beam Angle: 120 Degrees Brightness: 10000LM Waterproof Rating: IPX8 Switch Type: Lamp Head Press Switch Range: 300-500m/984.3-1640.4ft Battery: Using 4 x 18650 Lithium Batteries (Not Included) Waterproof Depth: 100m/328.1ft Underwater Package List: 1 x Flashlight (Battery Not Included) 1 x Handle Bracket 1 x Black Handle Bracket Screw 1 x Spherical Bracket 1 x Long Spherical Bracket Screw 1 x Hex Wrench 2 x Waterproof Ring Note:Manual measurement please allow some errors.