Solarforce T1 CREE U2 LED 3 Mode 505 Lumens 2.7V-9V CR123A/18650 Flashlight Black The body is made of T6063 T6 aircraft grade aluminum alloy in Mil-spec type III hard-anodized (matt black) finish, which significantly strengthens the anti-wearing and anti-corrosion ability; The head is made of stainless steel, which makes the whole unit more impact-resistant Battery type: 1x18650 or 2xCR123A (not included) Length: 123.5mm; Head diameter: 26.83mm; Body diameter: 26.25mm; Tail diameter: 28.18mm Mode: High - Medium -Low Emitter Type: CREE U2 LED; Brightness: 505 lumens