Rechargeable battery: portable speaker charges through usb-c cable (included). lithium-ion battery offers up to 12 hours of life per charge
built-in microphone: you can make and receive calls through the portable bluetooth speaker. just one button accesses your phone's siri or google assistant voice input
bose connect app: app automatically updates the portable bluetooth speaker with the latest software, allows you to customize settings, unlock product features, and more
charging time: approximately 4 hours when using the original cable.