Bluetooth 5.1 Wireless Headset Earbuds Headphone Noise Cancelling TWS Waterproof Features: The latest TWS binaural stereo stereo Bluetooth headset with the  5.1 chip gives you very efficient wireless performance. Bluetooth V5.1 chip, 10m connection distance, stable performance, high transmission, low consumption and strong compatibility. The two-ear split design allows the single ear to be used separately, equivalent to two independent Bluetooth headsets. Ergonomically designed for a more comfortable fit on the auricle. 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. Strong compatibility, IOS/Android universal, one-button control, simple and stylish. Specifications: 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: 4000mAh 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 4*Ear cap 1*Charging Cable 1*User Manual Tips： Due to the long transportation time, the battery may be running low. Therefore, the device may not be turned on. As this situation, you can charge the battery longer (about 24 hours) to get it back to its original state.