No.1 Flashlight D10S professional diving flashlight Type: D10S Selling Unit: Set Specifications: BATTERY INSTALLATION 1. Remove the tail by turning counter-clockwise. 2. Remove used batteries and replace with fresh batteries as shown by the polarity stickers. 3. Mount the tail by turning clockwise. DO NOT ACTIVATE IT YET. BATTERY CHARGING1. Plug the charger in the wall power socket, the indicator light is green in the free-load status.2. Put the battery in the slot of the charger.3. The indicator light is red if the battery is not fully charged; it will turn green after fully charged.4. Take out the fully charged battery and use them in the diving light. ON/OFF Turn the tail clockwise until the light activates. DO NOT OVERTIGHTEN.To turn the light off, back off the tail counter-clockwise until the light goes off.Continue to back off for approximately one full turn to eliminate the possibility of the li...