Features: Using CVC8.0 digital noise reduction technology.  The latest TWS binaural stereo stereo Bluetooth headset with the  5.1 chip gives you very efficient wireless performance.  Ergonomically designed for a more comfortable fit on the auricle.  The two-ear split design allows the single ear to be used separately, equivalent to two independent Bluetooth headsets.  The charging compartment can be used as a mobile phone stand, portable mobile phone stand, support horizontal and vertical placement Watch live broadcasts and movies without the need to purchase an additional mobile phone stand.  IPX7 waterproof and sweatproof.  Subvert the traditional host to connect vice headphones ,dual host.  Strong compatibility, IOS/Android universal, one-button control, simple and stylish.     Specification: Bluetooth name: 5;  Bluetooth version: 5.1;  Protocol: HFP 1.7 / HSP1.2 / A2DP 1 / AVRCP 1.6/ SPP1.2 / PBAP1.0;  Noise reduction version: CVC8.0;  Frequency range: 2402MHz ~ 2480MHz;  Working distance: 10m;  Charging input voltage and current: 5V;  Headphone battery capacity:50mAh;  Charging compartment battery capacity: 2000mAh;  Headphone charging time 2 hours;  Music playback time: 4-5 hours;  Talk time: 4-5 hours;     Package Included: 1*Pair of Wireless Earbuds (Left & Right);  1*Charging Case;  1*Charging Cable;  4*Ear cap;  1*User Manual