Fenix TK10 Flashlight / Torch. IF TAKEN BY 10PM TONIGHT WILL ACCEPT BEST OFFER AND SEND OUT TOMORROW. Top of the range tactical flashlight. Super bright long range beam. The Fenix TK series features a powerful, solid, durable, and waterproof design intended for rugged outdoor and military use. The TK10 uses two CR123A batteries (included) and maintains excellent constant brightness with two output modes: General mode, which can last for a whole night and can be used for general illumination, and Turbo mode, which can be used whenever high-powered light is needed - search and rescue, ...