The Bluetooth Receiver is specially designed for headphones, car stereo systems and home audio system, changing the devices without Bluetooth 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, MP3 and more without the hassle of cables. Features: Bluetooth Audio Receiver: RPF-08 changes the traditional headphones and speakers into Bluetooth-enabled ones. After paired, play music wirelessly from your Bluetooth-enabled audio devices without the hassle of cables. Advanced Bluetooth: Wireless 4.1 technology ensures transmitting strong signal in high quality and high speed. Bluetooth range reaches up to 10 meters in open space without obstacles. Hands-free call & Multi-pairing: With built-in microphone, it enables hands-free calls to ensure driving safety. Multi-point connection function ensures to switch between your business and personal phones. Strong Compatibility: Compatible with Android and iOS smart phones, tablet pc and more Bluetooth-enabled audio devices. 3.5mm audio port design, suitable for headphone, speaker and other stereo system. Low Power Consumption: Built-in 60mAh Battery ensures up to 4 hours working time. Compact and portable with back clip, convenient to use. Supports self timer function. Specifications: Model Number: RPF-08 Bluetooth: V4.1 Operating Distance: 10m (no obstacle) Output Connection: 3.5mm AUX output port Built-in Battery: 60mAh Working Time: about 4 hours Standby Time: 250 hours Charge Time: about 1 hours Charge Port: Micro USB 5V Color: Black Item Size: Approx. 6.0 * 1.5 * 1.4cm / 2.36 * 0.59 * 0.55in Item Weight: 7g / 0.25oz Package Size: Approx. 15.0 * 10.5 * 1.5cm / 5.90 * 4.13 * 0.59in Package Weight: 23g / 0.82oz Package List: 1 * Bluetooth Receiver 1 * USB Cable 1 * 3.5mm Audio Adapter 1 * English / Chinese User Manual