Sony WH-CH520 Wireless Bluetooth Headphones with Microphone

Brand: SonyModel: WH-CH520Type: Wireless On-Ear HeadphonesDriver Size: 30mmFrequency Response: 20Hz – 20kHzBattery Life: Up to 50 hoursCharging Time: Approximately 3 hoursQuick Charge: 10 minutes for 90 minutes of playbackBluetooth Version: 5.0Weight: 147 grams