Ultimate Survival Technologies Jolt USB Rechargeable Mini Light
This handy little rechargeable light has a built-in clip which easily attaches to key chains and zippers. It never needs batteries and has a bright 25 lumen LED. You can switch from a steady ON mode to a FLASHING mode. It only takes 20 minutes to charge and lasts up to two hours on a charge. Simply plug and recharge in any USB port.