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Spesifikasi
- Model: BT4821
- Bluetooth Version: 2.1+EDR
- Frequency Range: 2.4Ghz
- Output Power Category: Class 2
- Bluetooth Mode: A2dp/Avrcp
- Bluetooth Range: up to 30feet
- Eletric voltage: DC 3.7V
- Working current: DC 3.7V/38mA(Max)
- Charge voltage: DC 5.0V
- Charge current: DC5.0V/130mA(Max)
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