WeSC On-Ear Headphone has a light and foldable design and makes it the ultimate travel companion. The built in microphone allows for handsfree calling and access to your voice assistant. A full charge gives up to 9 hours listening to your favorite playlists. Product Features Bluetooth version: 4.2 Wireless working distance: 32 ft Battery Capacity: 300mAH Total play time: 7-9 Hrs Integrated microphone: Handsfree calling Total talk time: 8-11 Hrs Standby time: 400-500 Hrs Button Functionality: Power on / Power Off /Music Play / Music Pause / Answer phone / Dial-Back Voice Prompt