Transcend JetFlash T3 Series 16 GB Ultra-Slim Metallic Flash Drive (TS16GJFT3S) Refined zinc alloy body and stainless steel protection plate COB (Chip on Board) manufacturing technique Easy Plug and Play installation USB powered. No external power or battery needed Ultra slim with chic design bringing great design into everyday life Refined zinc alloy body and stainless steel protection plate COB (Chip on Board) manufacturing technique Easy Plug and Play installation USB powered. No external power or battery needed Ultra slim with chic design bringing great design into everyday life Offers a free download of Transcend Elite data management tools Limited lifetime warranty