Description: Bluetooth compatible V5.0, Upgraded chipset, Hi-Fi audio decoding and high resolution, giving you a good music experience. With 3.5mm aux to be Bluetooth enabled, built in microphone for hands free calling, GPS and streaming music while driving Lavalier Clip-on Design, hands free, easy to answer, access to stable music even in sport exercise Built in 110mAh large-capacity battery, 2 hours full charge, listening to songs for 4-5 hours 17mm Compact body design, easy to carry. Specification: Name: Bluetooth Audio Receiver Model:BT001 Material: Plastic Output interface: 3.5mm Audio Transmission rate: 80Mbps Operating frequency: 2400MHz Charging:2h Listing Music: 4-5h Bluetooth version:5.0 Bluetooth protocol: AVRCP.A2DP.HFP.HSP Signal to noise ratio: > 90 db MIC sensitivity: -42dB Frequency response: 20HZ-20khz Effective working radius: 10m Output power: 11mW RL Battery capacity: 110mAh Features: Sound quality, Hands free,Long , Hi-Fi Stereo Sound Size Chart: Size: Approx. 5.23 x 2.16 x 2.05cm/2.1 x 0.9 x 0.8 inch Package Includes: 1 Piece Bluetooth Audio Receiver Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!