ProTac 2L-X USB Multi-Fuel – Uses rechargeable 18650 USB battery or two CR123A lithium batteries . TEN-TAP Programming - Choice of three user selectable programs: 1) high/strobe/low 2) high only 3) low/high o High: 500 lumens; 165m beam; runs 3.25 hours o Low: 40 lumens; 49m beam; runs 30 hours o Strobe: runs 3.25 hours. Durable, anodized aluminum construction; removable pocket clip . IPX7 waterproof to 1m for 30 minutes, 2m impact resistance tested . Includes nylon holster . Limited Lifetime Warranty 88082