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 | MEMS (Micro-Electro-Mechanical System) microphone: Yes | USB Type-C charging port: Yes | Microphone noise-canceling: Yes | Product colour: Black | Windows operating systems supported: Yes | Connectivity technology: Wired & Wireless | Package width: 183 mm | Bluetooth: Yes | Weight: 227.5 g | Charging time: 150 min | USB connectivity: Yes | Battery operated: Yes | Headphone frequency: 18 - 22000 Hz | Package height: 207 mm | USB connector: USB Type-C | Package depth: 65 mm | Ear coupling: On-ear | Number of microphones: 2 | Impedance: 18 Ω | Acoustic system: Closed | Wireless range: 30 m | Wearing style: Head-band | Product type: Headset | Other operating systems supported: ChromeOS | Bluetooth version: 5.0