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Version : Bluetooth V4.0           
Frequency Range: 2.402GHZ-2.480GHZ ISM Band                        Transmission: CLASS 2 
Channels: 79 channels of 1Mhz 
BW Connection: Spot to Spot     
Transmission ＜=10M    
Frequency Responses: 20HZ-20KHz  
Signal to Noise rate: 80dB   
Driver output: 2*10mW  
Status Indicator: Red, Blue indicator 
Compatibility: Suitable for HFP,HSP,A2DP, AVRCP Bluetooth agreement computer USB Bluetooth plug, cell phone, IPAD MID etc.          
Battery: Polymer battery 3.7V 80mA 
Charging time: 1-2 hours   
Charge sources: Computer USB 5v, Output DC 5V 300mA charger             
Operations time: Around 4 hours (battery fully charged)  
Standby time: More than 80 hours (fully charged status)