... CE certificate,ISO9001:2008 VCOM Professional Wireless Outdoor Stereo Speaker Product Feature:Bluetooth version : Bluetooth 2.0Frequency:2 ... quality at every stage of production, from the incoming raw materials to the finished product. · QC Staff: ... Board.Categories of computer electronics: Headphone, Bluetooth Headphone, Earphone, Speaker, Mouse, keyboard,Game Headphone and Keyboard, Game Mouse, ...