Streamlight Protac HL5-XPROTAC HL5 X WITH 2 18650 (SL B26) USB RECHARGABLE BATTERIES AND WRIST LANYARD BOX BLACK, 88081 Multi Fuel uses two Streamlight SL B26 protected Li Ion USB rechargeable battery packs; also accepts four CR123A lithium batteries Features TEN TAP Programming Choice of three user selectable programs: 1) high strobe low 2) high only 3) low medium high High (SL B26 battery packs): 3,500 lumens; 452m beam; runs 1. 25 hours High (CR123A): 2,500 lumens; 385m