A4 Tech 2DRUMTEK B20 TWS Bluetooth 5 Kulakiçi Kablosuz Siyah Kulaklık

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A4 Tech 2DRUMTEK B20 TWS Bluetooth 5 Kulakiçi Kablosuz Siyah Kulaklık SPECIFICATIONSSpeaker Size: 13 mmFrequency Response: 20 Hz-20 kHzEarphone Sensitivity: 102 dB @ -10 dBFSMic. Sensitivity: -42 dB @1 kHz/PaEarphone Impedance: 32 ohmBluetooth Version: v5.2Operation Distance: 10 mEarphone Battery Type: Lithium Battery (40 mAh)Charging Case Battery Type: Lithium Battery (380 mAh)Charging Power: 5V=500mAEarphone Charging Time: ?1.5H (Low Battery to Fully Charged)Case Charging Time: ?1.5H (Low Battery to Fully Charged)Music Playtime with Single Charge: ≈5H (50% Volume Data)Playtime from Charging Case: ≈20H (50% Volume Data)Earphones weight: 4gWeight: 39g