T6 version technical parameters [lamp type]: imported latest Kruger XM-LT6 lamp beads [lamp life]: 100000H [material]: aerospace grade reinforcement material high-density engineering plastics [lens material]: high quality thickened optical lens [diving range]: 60 meters [battery]: 18650 battery [voltage]: 3.7-4.2V [luminous mode]: strong light [charging time]: 3-4 hours [product specifications]: 35 (head diameter) 25mm * (tail diameter) total length 120mm [Weight]: 80g (including battery) 3-4 hours [Product specifications]: 35 (head diameter) 25 mm * (tail diameter) total length 120 mm [weight]: 80 grams (without battery)? Operating instructions? Insert the battery: 1. Unscrew the tail cap of the flashlight counterclockwise, 2. Insert the battery into the tail cap direction of the negative battery terminal 3. Put the tail cap of the flashlight back into the flashlight, rotate clockwise and tighten the flashlight clockwise: turn the switch, flashlight/off