Specification: 
<br />
<br />Bluetooth Specification : V4.1 
<br />Receiving Range: 10M 
<br />Frequency response: 20-20KHZ 
<br />S/N ration>90db 
<br />THD<0.1% 
<br />Speaker Diameter:40mm 
<br />Speaker Impedance:32 
<br />Audio connector:3.5mm 
<br />Frequency response: 20-20KHZ 
<br />Operating voltage:3.5-4.1V 
<br />Operating current:50mA 
<br />Output power: 2X10mW 
<br />Battery: 5B rechargeable battery (3.7V 400mah) 
<br />Power Supply: PC USB port DC5V; DC 5V (500MA) Travel Charger: DC 5V (500MA) Car Charger 
<br />Charging time: 2 hours 
<br />Color:Cyan,Pink,Gold,Black 
<br />
<br />Method of use: 
<br />
<br />Open the Bluetooth mobile phone or computer 
<br />Search Bluetooth headset signal, in accordance with the instructions of the link 
<br />Other detailed functional use, please debug instructions 
<br />
<br />Package Included: 
<br />
<br />1 x Headphone 
<br />1 x Cable 
<br />1 x User manual