1.Bluetooth Version 3.0 plus EDR, CSR Bluetooth chip, compatible with V2.0, V1.2 and V1.1 backward and other standards, support A2DP, AVRCP, Handsfree protocol.<br>2.Support TF card.<br>3.Support handfree calling.<br>4.Working distance: 10 meters.<br>5.Dimension: 60MM * 60MM * 60MM.<br>6.Weight: 230g.<br>7.Speaker unit dimension: diameter 45MM .<br>8.Maximum output power: 3W<br>9.Frequency response: 280Hz-16KHz.<br>10.SNR:  95dB.<br>11. Distortion:  0.5%.<br>12. Battery Capacity: 520mAh.<br>13. Charging voltage: 5V ± 0.5V.<br>14. Charging time: 2 hours.<br>15.Standard accessories: charging audio cable x 1 ,manual x 1<br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/558a71fd2ed684401cc47397-6-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;">