Lenovo EPOS 4Z21P90188 Audio Headphones

Certification: BQB, CE, UKCA, RCM, FCC, WPC, BIS, KC, SDoC, SDPPI | USB Type-C charging port: Yes | Continuous audio playback time (ANC on): 20 h | Continuous audio playback time (ANC off): 46 h | MEMS (Micro-Electro-Mechanical System) microphone: Yes | Microphone noise-canceling: Yes | USB connectivity: Yes | Wearing style: Head-band | Other operating systems supported: ChromeOS | Package depth: 65 mm | Package height: 207 mm | Headphone frequency: 18 - 22000 Hz | Impedance: 18 Ω | Wireless range: 30 m | Product type: Headset | Ear coupling: On-ear | Acoustic system: Closed | Number of microphones: 2 | Charging time: 150 min | Battery operated: Yes | Bluetooth version: 5.0 | USB connector: USB Type-C | Weight: 227.5 g | Bluetooth: Yes | Connectivity technology: Wired & Wireless | Product colour: Black | Package width: 183 mm | Windows operating systems supported: Yes