product description:
SPECIFICATIONS:
Model: D39
BT Standard: V5.0
Operating Range: 33 feet/10 meters (No obstacles between)
Supporting Protocols: A2DP/HFP/HSP/AVRCP
Charging Time: 2 hours (earbuds); 2 hours (charging case)
Talk/Playing Time: about 3 hours (Varies according to volume level and audio content)
Charging Voltage: DC 5V
Battery Type: Li-polymer
Battery Capacity: 50mA (earbuds); 480mA (charging case)
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