Lenovo EPOS 4Z21P90188 Audio Headphones

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