The Hama Spirit Calypso III stereo Bluetooth headset is ideal for the office, home office or on the go. Talk time: 60 hours Music playback: 60 hours Standby time: 4320 hours Charging time: 2.5 hours Range: 10 m Four multifunction buttons on the earcup Compatible with Siri and Google Assistant Adjustable padded headband Foldable earcups for space-saving storage Low battery warning Can also be used with a 3.5 mm audio cable when the battery is empty Please note: A USB-C cable is required for charging (not included).