Features: ReusableWireless Bluetooth-compatible Receiver: It works by being plugged into a speaker an earphone or an audio system of choice and being paired with the music player via the Bluetooth-compatible connection. After pairing the users can enjoy the music at their will Easy to Operate: Simply connect your speaker/headset with our device immediately transform your speaker/headset into a fashionable wireless Bluetooth-compatible speaker/headset. Portable Design: Mini size with clip design the feature of portable can let you carry them to anywhere you want. Application: Use the 3.5mm jack to easily plug in any active PC speakers car and home stereo systems and A/V receivers. Customer Service: Our top priority is customer satisfaction which is why we offer a satisfaction guarantee for all of our merchandise. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Material: ABS Product color: black Interface type: 3.5mm Bluetooth -compatible version: Bluetooth -compatible 3.0 Product size: 58*14*15mm Working hours: 2-3 hours includes: 1 X Bluetooth-compatible Receiver 1 X 3.5mm Adapter 1 X Usb Charging Cable 1 X Instruction Manual 1 X Bag Package OR 1 X Bluetooth-compatible Receiver 1 X 3.5mm Adapter 1 X Usb Charging Cable 1 X Instruction Manual 1 X Color Box Package OR 1 X Bluetooth-compatible Receiver "