Solarforce Z1 XPG2 hand held flashlight (Black) T6063 grade aluminum with CREE XP-G2 R5 LED Tempered ultra-clear glass lens with two-surface anti-reflective coating Battery type: CR123A x 1 Input voltage: 1.5  3V Reversed polarity protection plus Water-proof (IPX-8 standard) When turned off and turned on again after 2 seconds, it enters the high output