... 2, Size:D11*L27 mm 3, Aluminum body + metal Key ring 4, 3*LR41 battery(inc.) 5, Good for ... promotion gifts Key Features/Parameters:1, LED keychains2, With 1 pcs white ... bulb3, Aluminum body + metal Key ring4, Good for promotion gifts5, Product size: D11 mm * L27 mm6, Product weight: 10 g7, Powered by ... : 18KGS LED Keychain in Aluminum body and metal key ring SLS-LC20