YPF-03 ia a 2 in 1 Bluetooth Transmitter & Receiver. As a Bluetooth Audio Transmitter, it can be connected to the audio devices without Bluetooth function via the included 3.5mm Audio Plug, changing these audio devices into Bluetooth-enabled audio devices, and making it work with Bluetooth-enabled Headset and Speaker. As a Bluetooth Audio Receiver, YPF-03 can change the traditional Car Stereo systems and Home Audio System into Bluetooth-enabled ones, and easy to pair with Bluetooth-enabled Smart Phones, laptop, tablet, etc. With this product, you can greatly enjoy music from your phone, laptop, tablet without the hassle of cables. This 2 in 1 Bluetooth Transmitter & Receiver will give you much fun and convenience.Features:Receiver Mode:Change the traditional Car Stereo system or Home Audio System into Bluetooth-enabled ones. After paired, play music wirelessly from your Bluetooth-enabled Smart Phones, Laptop, Tablet and more.Transmitter Mode:YPF-03 can be connected to the audio devices (such as MP3, MP4, TV and PC, etc.) without Bluetooth function, changing them into BT-enabled ones, and making it work with BT-enabled Headset and Speaker.Strong Compatibility:Compatible with Android & iOS smart phones and PAD, almost all Bluetooth-enabled audio devices, and stereo system with 3.5mm port. Real-time low latency and high-quality audio transmission.Low Power Consumption:Built-in 300mAh Li-polymer Battery ensures up to 8 hours working time, you can enjoy wireless free all day long. Easy connection, without any driving and downloading APP.Fast Connection:Built-in enhanced signal transmission circuit, the connection is fast and stable. Automatic memory connection function, the operation is simpler and the connection is more convenient.Specifications:Model number: YPF-03Bluetooth: V4.2Protocol Supported: A2DPTransmission Distance: 10m / 33ft (open space)Battery: Built-in 300mAh Rechargeable Li-polymer batteryWorking Time: about 8 hours (depend on audio volume)Charging Time: about 2 hoursCharging: Micro USB 5VOutput: 3.5mm stereo interfaceInput: 3.5mm stereo interfaceColor: BlackMain Item Size: 6.3 * 4.1 * 0.8cm / 2.48 * 1.61 * 0.31inMain Item Weight: 17g / 0.61ozPackage Size: 12.8 * 7.1 * 3.2cm / 5.04 * 2.79 * 1.26inPackage Weight: 66g / 2.33ozPackage List:1 * Bluetooth Audio Transmitter & Receiver1 * 3.5mm Audio Cable1 * USB Charging Cable1 * User Manual (English / Chinese)