The all-new P3R rechargeable flashlight has perfected power and portability in a keychain-sized package. With an output of up to 140 lumens, this compact light slips easily into a small pocket or clips onto your keys for quick access. The included 3.7V Lithium-Ion battery recharges quickly and provides an amazing 6 hours of runtime in low. Thanks to the intelligent and completely automatic temperature control, a Ledlenser never gets too hot, no matter how much you use it. This protects you from burns and the LED from overheating.