Specifications:
• Bluetooth Standard: V 2.1 + EDR
• Speakers Rated Power Output: 3W
• Battery: Built-in Rechargeable .37V 200mAh Lithium Battery
• USB Charging Input Voltage: 5V / 500mA
• Maximum Play Time: 3+ Hours (the volume will affect the time)
• Work Frequency: 2.4GHz SNR: 80db
• Bluetooth Hands-Free Function with Built-in Microphone
• Noise Elimination Circuit for Clearer Voice Rendering

Package Content:
1* Wireless Bluetooth Speaker
1* USB Charging Cable
1* User Manual

Note:
Colors may are a little different from the picture due to different monitors.

• Built-in Bluetooth 2.1 + EDR wireless module. 
• Bluetooth audio sound, perfect sound quality and bass effect.
• 10M transmission distance. Support phone, ipod and other devices with bluetooth function.
• Bluetooth hands free function, answer call easily. Bluetooth music controlling function. 
• Built-in rechargeable Li-ion battery, lasts for up to about 7 hours per charge.

Built-in Bluetooth 2.1 + EDR wireless module. JankoPalise