Universal Mini S520 Wireless Bluetooth V4.0 Earphone Noise Reducing Music Stereo Headset Headphone Type: Bluetooth Stereo Headset Noise Reduction: Yes Ear Coupling: In the Ear Talk Time: About 4 hours Music Time: About 3 hours Standby Time: About 3-5 days Charge Time: About 1 hour Operating Range: 10m
