Key Features:

• Work with all speakers. Make them become a Bluetooth wireless speaker. 
• Bluetooth receiving and transmit music to speaker.
• Bluetooth V3.0, class II, up to 10 meters 
• Plug and play, no need pairing code

Technicail Parameters:

• Bluetooth 3.0 compliant
• Transmission distance not less than 10 m/33ft
• With inbuilt mic. Can answer/hang up phone call
• Compatible with all bluetooth device
• Working time: 10 hours
• Battery: 200mAh
• Charging time 2 hours
• Color: black, white