This 100-Lumen Pen Light features technology that can run up to 5 hours at a time. Plus, the focus feature allows you to adjust beam distance up to 3 times to help get the job done. This durable pen light survives a repeated 6.6-foot drop test and is IP54 dust and water resistant. It's complete with a pocket clip and AAA batteries included. FEATURES 100 lm for 5 hrs. runtime, 50 lm for 10 hrs. runtime Focus feature to adjust beam distance by 3 times Survives our repeated 6.6 ft. drop test IP54 rated for dust and water resistance