Description:ESQ9i headphone provides you with great sound quality, super bass. Suitable for all kinds of electronic devices with 3.5mm jack port. Powerful neodymium magnet unit design, with noise isolating hi-definition technology, you will enjoy the excellent sound. The headphones surface paints with piano UV and strong ultraviolet curing, it makes the color bright and fresh. Main Features:Noise isolating hi-definition technology3.5 mm metal headphone plugSuper bass great sound, light and comfortableChoose next song after pressing the button two timesNote:This 3.5mm earphone plug is accord with CTIA standard. If you want to know the standard of your phone's 3.5mm interface, you can refer to the following address. http://en.wikipedia.org/wiki/Phone_connector_%28audio%29#TRRS_standards Brand: awei Model : ESQ9i Color : Blue, Black, White, Pink Wearing type : In-Ear Function : Microphone Connectivity : Wired Connecting interface : 3.5mm Application : Portable Media Player, Mobile Phone, Computer Plug interface: Full-sized Cable length : 1.2m Driver unit: 9mm Frequency response : 20~20KHz Package weight: 0.067 kg Product size (L x W x H) : 120 x 2 x 1 cm / 47.16 x 0.79 x 0.39 inches Package size (L x W x H) : 15.5 x 8.5 x 3 cm / 6.09 x 3.34 x 1.18 inches Package contents: 1 x In-ear Earphone, 2 x Pair of Earbud, 1 x English / Chinese Manual, 1 x Cable Clamp