cree led flashlight: 1,aluminium case from airplane 2,3.7V 3,2400MAH 18650 battery 4.battery protect when voltage over cree led flashlight flashlight Features:1 Material ... : T6061T6 Aerometal2 Surface treatment: Hard anodizing (Colorful)3 Bulb Type: Cree 3W high power LED, Life 100 ...