The 500 lumen ProTac 2L-X is an EDC light that is available in two ways: The ProTac 2L-X USB is a complete rechargeable system that includes our new Streamlight SL-B26(TM) protected Li-Ion USB rechargeable battery pack with an integrated USB charge port. The ProTac 2L-X includes two CR123A lithium batteries. Features: Multi-Fuel - Uses Streamlight SL-B26(TM) protected Li-Ion USB rechargeable battery pack or two CR123A lithium batteries Rechargeable system includes an SL-B26 battery packand USB cord and nylon holster The non-rechargeable system includes two CR123A lithium batteries and a nylon holster TEN-TAPA(R) Programming - Choice of three user-selectable programs:1) high/strobe/low 2) high only 3) low/high LED output: High for maximum illumination: 500 lumens; 165m beam; runs 2.75 hours (CR123A batteries); runs 3.25 hours (SL-B26 battery pack) Low for extended run time: 40 lumens; 49m beam; runs 30 hours (either battery type) Strobe for signaling or disorienting: runs up to 3.25 hours (CR123); runs up to 4.5 hours (SL-B26 battery pack) Durable, anodized aluminum construction; removable pocket clip IPX7 waterproof to 1m for 30 minutes, 2m impact resistance tested Anti-roll head Includes nylon holster 5.14" (13.0 cm); Weight: 3.9 oz (111g) with CR123 batteries; 4.4 oz (125g) with SL-B26 battery pack RoHS compliant #html-body [data-pb-style="62DF8287B3CBC"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF8287B3CCA"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}