Solarforce Z2 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:AA x 1 Input voltage: 1.5v Reversed polarity protection plus Water-proof (IPX-8 standard) When turned off and turned on again after 2 seconds, it enters the high output