Compatibility Compatible with PCs and smartphones via Bluetooth® or USB Type-A BT700 adapter Color Black Charge time <1.6 hours Charging type Cable Battery life Up to 24 hours (talk time, online indicator off); Up to 18 hours (talk time, online indicator on); Up to 47 hours (music time); Up to 50 days (standby time) Battery type Rechargeable Li-ion Cable length 1.5 m Bluetooth version 5.1 Supported bluetooth profiles A2DP; AVRCP; HFP; HSP Paired devices Up to 8 Voice alerts Volume maximum; Volume minimum; Mute on; Mute off; Muted; Connection status; Talk time; Battery low Voice assistant Siri; Google Button user controls Power on/off; Call answer/end; Mute; Volume +/-; Pairing Headphone type On-ear (stereo) Number of microphones 2 Microphone type Noise cancelling Speaker bandwidth 20 Hz to 20 kHz Microphone bandwidth 100 Hz to 6.8 kHz Ear cushions Artificial leather (surface material) Compatible Operating Systems Windows 11; Windows 10; macOS; Android™; iOS Acoustic protection technology SoundGuard Digital 1 2 Dimensions (W x D x H) 15.5 x 6.7 x 18.2 cm Speaker size 32 mm