The WF-502D is like a Ultrafire WF-502B on steroids.  Rather than one, it takes 2x18650s, allowing it to run a very long time between battery swaps.

Like the 502B, the 502D is rugged and easily serviceable from head to tail.  It is built to last and it is P60 compliant so it will never become obsolete.  The WF-502D is too long for pocket carry but will easily fit into your pack or glove box of your car.

High quality P-60 host.

Features

    * Cree XR-E R2-WC LED emitter
    * Reflector: Aluminum OP (textured)
    * Battery Configuration: 2 x 18650 batteries
    * Maximum voltage input: 8.4V
    * 1-mode
    * Maximum Brightness: 250 lumens (manufacturer rated)
    * Estimated Run time: 2 hours
    * Accepts all P60 compliant modules