The SL66r, a member of the Slim Line series, produces a beam of 950 lumens with its rechargeable ICR 18650 lithium-ion battery. The Pro switching sequence (100, 40 and 10 percent plus Tactical Defense Strobe) ensures easy use. The multi-battery system gives users a choice between two powerful CR123 batteries or inexpensive AAA batteries (regular or rechargeable). Watertight with a rating of IPX8. The flashlight comes with an ICR 18650 rechargeable battery and a wide range of accessories for all charging situations.