Generic Kephe Tws I9 Mini Wireless Earphone Stereo

We are guarantee each device be tested rigorous before shipped out, SO all products can guarantee 100% high quality before sent out.If you have any questions, please contact us. Thank you very much !!!FeaturesBluetooth version: version 5.0Transmission distance: outdoor straight line distance 10-15 metersBattery capacity: pure cobalt battery 60 mAhFunction: fast charging, HD callListening to music time: 2-3 hours up and down / pause playbackTalk time: 2-3 hoursStandby time: 130 hoursCharging time: 1hoursHow to pair headphones simultaneous:(1) 2 headphonesual press and start to see the red and blue flashing and then release the hand(2) 2 headphones will be automatically paired together, 1 of which will not flash