Speaker part: use the speaker diameter of about 25mm / amplifier section: Practical maximum output 2.5W</br>Bluetooth: communication method Bluetooth standard ver.3.0 / Output Bluetooth standard Power Class1 / line-of-sight distance of about 10m / use frequency band 2.4GHz band / modulation scheme FHSS / Supported profiles A2DP, AVRCP, HFP / corresponding codec SBC / corresponding content protection SCMS -T system / transmission band (A2DP) 20Hz-20,000Hz (when 44.1 kHz sampling)</br>Microphone section: format electret condenser type / directional characteristics omnidirectional</br>Maximum external dimensions (width height depth): (including the maximum protrusion) about 100mm / mass about 349g</br>micro USB charging and power supply support (and charge for the AC adapter to this product, USB cable is not included.)</br></br>Product Description</br></br>Product Description Talking, dance, listen. Enjoy more every day Smart Bluetooth (R) speaker ◆ corresponding to the voice control (*), smart wireless speakers By connecting with Bluetooth (R), you can play the song voice. Also, when talk, weather and schedule, the message is that also performs notes operation in addition to the LED lights and display not only me read aloud by voice, you can enjoy a more familiar presence. * Smart you need to install the Bluetooth Speaker application and voice control applications ※ Android (TM) 4.4 or more, as well as Bluetooth profile A2DP, AVRCP, corresponding to the HFP equipment ◆ hands-free communication is possible Can be connected with Bluetooth (R), it can be hands-free calls using the built-in microphone. You can voice control the transmission, you can call if touch the speaker body incoming. It is also useful when making a conference call. ◆Enjoy the music in the music dance Equipped with a function of a speaker body to action to fit the music. To the music, the speaker cover movement, LED light will synchro. In addition, you color the music in a variety of actions such as the body is moved forward or rotation.</br><br/>http://www.amazon.com/gp/product/B010D08SXM