Dell Vostro 3520 Intel Core i5-1235u – 4GB DDR4, 256GB SSD, 15.6″ FHD 120Hz 12th Generation / Black

Type: Wireless headphone (with cord)Battery: 400mADriverUnit: 40 mmFunction: volume control, pause/Play device, MIC unctionStead by time: 100 hoursPlay time: 18 hoursFrequency Response: 20 Hz-20KHzCord length: 1.2 m‡10%Connector: 3. 5 mm stereo plugSensitivity: 114dab/mWAudio source: communication equipment