Features: Made of high-quality ABS material, this transmitter is durable and long-lasting. Perfect for those who want to listen to their music without the hassle of wires and cable. Whether you're at-home or on-the-go, this transmitter can be used in a variety of settings. Support pairing bluetooth-compatible stereo Headsets/Earphones to control play/pause, forward/backward. With its 30-pin interface and fast-transmission speed of 2.4 Mbps, this transmitter ensures a seamless-listening experience. Specifications: Material: ABS Size:Approx.4x4x8cm/1.57x1.57x3.14inchinch Net Weight:8g Interface: 30pin Plug-and Play: Plug-and Play External power supply: No external power supply. Transmission rate: 2.4Mbps Operating frequency: 2.4MHz Support pairing pin code: 123400008888 Working current: 40mA-max. Operating range: 10m. For-iPod Package Includes: 1x Bluetooth-compatible Transmitter note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.