BESTSUN Penlight Mini AAA CREE Handheld LED Pen Flashlight Pocket Torch Light 120LM (13.5CM.=5.13IN.) Waterproof Resistance Rating: IPX-6 , Super Lightweight mini size, only 13.5cm in length, light-weight and portable, very convenient to carry. POWER RESOURCE:2* AAA batteries.(Not Included) SIMPLY OPERATION: the switch is easy to use, even with large thumbs. MINI SIZE& EASY TAKE:like a size of an ink pen and easy to clip to the pocket,the length is 5.13 IN. EXCELLENT MATERIAL:the outer casing is sturdy aluminum.The lens is recessed enough to protect it from the occasional fall and survive any general knocking about.