Lenovo EPOS 4Z21P90188 Audio Headphones

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