Part Number 4XD1S19778 Warranty Period 3 Years Limited Warranty Minimum Operating Temperature 0°C Maximum Relative Humidity (%) 90% Maximum Operating Temperature 45? Packed Weight 365g/0.81lb Packed Dimensions (L x D x H) 194 mm x 161 mm x 51 mm (7.64 inches x 6.34 inches x 2.01 inches) Package Type Brown Box Included Accessory USB-C Bluetooth Audio Receiver x 1 USB-C to USB-C cable x 1 Soft Pouch x 1 Shipment Group Headset x 1 USB-C Bluetooth Audio Receiver x 1 USB-C to USB-C cable x 1 Soft Pouch x 1 Warranty Poster x 1 Setup Poster x 1 Safety Flyer x 1 Product Weight 165g/0.36lb Agency Approvals CB, BQB, CE, TUV mark, UKCA, RCM, EAC, cTUVus, FCC, ICES, WPC, SRRC, SIRIM, KC, IMDA, SDPPI, JRF Color Black Distortion < 2% Sensitivity 115+/-2.5dB Impedance 32 Ohm Frequency Range 20 Hz - 20 kHz Microphone unidirectional microphone x1 omnidirectional microphones x 4 Audio Input Bluetooth 5.3 USB digital audio Controls TEAMS Button Power on/off, Bluetooth pairing ANC On/Off/Talk Through Call answers / end / reject / hold / switch Microphone mute / unmute Media control: play / pause / forward / backward Volume +/- Voice Assistant Wireless Operating Distance Up to 30m Cable Length/Type 1.3 m Play Time 60 hours Battery Charging Time 2 hours Battery Capacity 640 mAh Power Requirement 5V, 640mA Connectivity Bluetooth 5.3 USB-C Receiver Supported OS Windows 10 and above, Mac OS, Android, IOS Brand Lenovo