Product info：

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Product Specifications:
Descriptions:Bluetooth2.0 Class2 Headset
Hardware Type:CSR BlueCore04
Bluetooth Spec. Compliance:Ver.2.0
Input Power:5.0V DC
Charge Time:2 Hours (By 5 V Power Adapter)
Rechargeable Battery:Rechargeable Li-Polymer Battery
Talk Time:Up to 6 Hours
Standby Time:Up to 120 Hours
Regulatory Approval:
Profile Support:Headset Profile, Hands free Profile

Radio Specifications
Spread Spectrum:Frequency Hopping Spread Spectrum (FHSS)
Frequency Rang:2.402 - 2.480GHz (2.4GHz ISM Band)
Receiver Sensitivity:< -75dBm with BER < 0.1%
Operation Temperature:-10¢XC ~ 55¢XC
Operating Range:Wireless Communication within 10 meters

Physical Specifications
Dimension:50mm x 20mm x12mm
Weight:10g
LED indicator Status:
Blue: Power on mode of Full charged
Red: Low power or being charged