Description:ESQ38i 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 timesWith microphoneNote: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: ESQ38i Color: Black,Red,Gold,Gray,Silver Wearing type: In-Ear Function: Microphone,Answering Phone Connectivity : Wired Connecting interface: 3.5mm Application: Mobile phone,Computer,Portable Media Player Plug Type: Full-sized Driver unit: 10mm Frequency response: 20~20KHz Package weight: 0.078 kg Product size (L x W x H): 120 x 2.5 x 1 cm / 47.16 x 0.98 x 0.39 inches Package size (L x W x H): 17.3 x 6.7 x 2.7 cm / 6.80 x 2.63 x 1.06 inches Package Contents: 1 x In-ear Earphone, 2 x Pair of Earbud, 1 x English / Chinese Manual, 1 x Cable Clamp