Hand Luggage Backpack, 40 L Hand Luggage Travel Backpack Laptop Backpack for 17.3 Inch Laptop Flight Approved Backpack Cabin Backpack for Weekender – 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