Lightweight & HandheldThis 6.5 inch LED waterproof penlight, weighing just 2.16oz, is extremely lightweight & robust. Come with a detachable steel belt or pocket clip, it can be easily carried in the pocket, slipped in your purse or toolbar. Special Power DesignRecharge the Lithium battery (included) via any USB port, or powered with either 2 x AAA batteries. This is a great choice when you can't charge it. Lithium ion battery fully recharges in product in 3 hours, provide up to 5.5 hours (low-beam) of non-diminishing brightness.