Aoneky Waterproof Mini LED Flashlight Keychain - Portable Military Equipment Key Chain Torch for Camping Emergency Lights (Black) Unique cold aluminum-magnesium alloy shell - sturdy and rugged, anti-wrestling compressive Waterproof to ipx-8 standard, 2 meters for 30 minutes Widely Usage: Mini size, lightweight, can used for emergency light, Christmas and holiday gift Perfect for camping, hiking, outdoor, travelling, EDC, etc. Battery powered: 1 AA battery required (not included)