Product use: it can simply connect to your bluetooth-enabled devices and also link to any of your wired audio player to enjoy stereo music. What¡¯s more, it supports hands-free function. This user¡¯s guide will get you started and ready to make the most of your yhbs-d9005 bluetooth speaker. Features: 1.2" full range neodymium driver 2.Natural and elegant design 3.Zinc alloy built body, sturdy and solid 4.Most advanced bluetooth v4.0 technology, world class design 5.Powered by cambridge silicon radio (¡®csr¡¯) chipset 6.Qualified by sig certification 7.360 degree sound field 8.Touch sense control panel 9.Hand-free incoming call 10.Voice prompt supporting 11.Elegant packing design 12.Internal rechargeable li-ion battery 13.Low battery and charging indication Specifications: Power output: 2w (rms) Driver: 2" full range neodymium driver Frequency response: 60hz - 20khz Signal to noise ratio: ¡ý 75db Dimension: w83xh80xd83mm Weight: 0.38kg (net) Packing: 1pc / box, 27 pcs / carton or as customized. Including: bluetooth speaker; usb charging cable; operation manual as customized Transportation: by sea or by air 1pc / box, 27 pcs / carton or as customized.