Features: 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. Noise cancellation technology provides excellent call quality. Easy to pair with bluetooth-enabled smartphones, laptop, tablet, etc. Bluetooth-compatible provides instant pairing and stable transmission without interruptions. Specifications: Material:ABS Color:Black Size:5.8x3.3cm/2.28x1.29in Bluetooth-compatible Version: V 5.0 Output Interface:3.5mm/0.14in Stereo Connector Charging Port: PD Type-C Battery Capacity:200mAh Operating Range: About 33-49.21 feet without Obstacle(About 10-15 meters accessibility) Frequency Response:50-20Khz Package Includes: 1x Bluetooth-compatible Receiver 1x 3.5mm Stereo Connector 1x Charging 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.