Lenovo Audio Headphones EPOS 4Z21P90188

Power USB Type-C charging port: Yes Weight and dimensions Product weight: 227.5 g Efficiency Wearing style: Headband Product color: Black Product type: Headset Packaging data Package width: 183 mm Weight with packaging: 445.5 g Package height: 207 mm Package depth: 65 mm Ports and interfaces Connectivity: Wired and wireless Bluetooth: Yes Bluetooth version: 5.0 USB connector: USB Type-C USB connection: Yes Wireless router range: 30 m Battery Continuous audio playback time (with ANC): 20 h Continuous audio playback time (without ANC): 46 h Battery powered: Yes Other functions Other supported operating systems: ChromeOS Windows operating systems supported: Yes Microphone MEMS (Micro-Electro-Mechanical System) microphone: Yes Noise-canceling microphone: Yes Number of built-in microphones: 2 Headphones Frequency response: 18 - 22000 Hz Headphone construction: On-ear Acoustic system: Closed Impedance: 18 Ω Speaker diameter: 3.65 cm Supplier Features Charging time: 150 min

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