Come and see our amazing products. The Bluetooth headphones feature the latest Bluetooth 5.0 TWS technology, support HSP, HFP, A2DP, AVRCP that offer a more stable and faster connection between devices. Advanced CVC noise reduction technology can filter background noise even in noisy environment. At the same time, the bass is thicker and the resolution is higher. Provides in-call stereo sound even you are 10 meters away from your device. Multipoint pairing for use with two devices at the same time and answer calls from either one. 65mAh lithium polymer battery can support about up to 6 hours of premium quality music playtime (single ear) or 5 hours playtime (dual ear)per charge. The 400mAh portable charging box can recharge the headphones 4 times, so you can enjoy music in your daily activities Pls confirm further with us if any query about packing info, inventory status and time schedule.