Come and see our amazing products. TWS and Bluetooth 5.0 Upgrade Powerful Bluetooth 5.0 produces incredible sound quality with deep bass.High quality Bluetooth chip eliminates noise and echo.Bluetooth 5.0 headphone chip provides faster wireless connection to your device.Built in dual antenna design,make the connection more firm.Even under electromagnetic interference,such as gyms,train stations,airports,can enjoy a seamless listening experience.A longer dry earplug provides a comfortable in ear fit,creating a perfectly sealed crystal for clear sound.Waterproof coating and well sealed shell,effectively prevent water and sweat. Built in Dual Microphone Bluetooth headset With built in microphones on either side,allowing you to make hands free calls in either way. Pls confirm further with us if any query about packing info, inventory status and time schedule.