Bluetooth Earphone Pen
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Particular introduction:

Technology Standard: Bluetooth V2.0
Chipset: BlueCore4-Audio Single Chip
Compatibility: General Headset and Bluetooth Cell Phone Radio
Performance: Class 2 Carrier
Frequency: 2.4-2.480GHz Rx
Sensitivity: <-75dBm Spread
Spectrum: 10 meters Voice dial, receive, end or reject calls, adjust the volume Powder Charger: Input 100-240VAC, Output 5VDC
Working Volt: 3.7V Battery:
Rechargeable Li-polymer Inside
Charging Time: 2-5hs
Talking Time: 5hs
Standby: 150hs Appearance
Package Size: 170*140*55mm
Headset Weight: 15g