Features: brand new and high quality brand new and high quality Connect bluetooth-compatible devices at once to listen to music, make phone calls, and more. It can fast and stable transmission without tangling. The bluetooth-compatible car adapter allows hands free calling with built in microphone. Latest noise cancellation technology provides excellent call quality. Easy to pair with bluetooth-enabled smartphones, laptop, tablet, etc. Bluetooth-compatible transmitter pair to old TV, PC, and transmit the audio to your bluetooth-compatible headphone or speaker. Specifications: Material:ABS Color:Black Size: Approx. 6.5x3.8 for cm/2.55x1.49 inch Bluetooth-compatible Version: V 5.0 Output Interface:3.5mm/0.14in Jack Charging Voltage: 5V Battery Capacity:280mAh Charging Current:50mA Charging Time:About 2Hours for Play Time:About 9 Hours Working Current:5mA Operating Range: up to 33 feet (10 meters accessibility) Bluetooth-compatible Microphone Operating Range:0.5m-2m/1.64-6.56feet Package Includes: 1x Bluetooth-compatible Transmitter&Receiver 1x 3.5mm Audio Cable 1x Manual note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.