Elvish Tac (E Tac) light
The E Tac light is the best archery light we have used to date. Rechargeable through a micro USB port, this light has fantastic battery life. Another unique feature is the motion sensing feature. Turn the light on at the beginning of your round and leave it on. The light will turn itself off and turn back on as soon as you pick up your bow. brightness settings from 1 to 15 means you will never have issues seeing your pin in any lighting condition.
The E Tac light is waterproof and offers a multitude of mounting screws and brackets foe an infinite amount of mounting options.