Sony BSP60 BSP60JP/B (Black) Smart Bluetooth Speaker for Android System (Japan Import) Speaker part: use the speaker diameter of about 25mm / amplifier section: Practical maximum output 2.5W 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) Microphone section: format electret condenser type / directional characteristics omnidirectional Maximum external dimensions (width height depth): (including the maximum protrusion) about 100mm / mass about 349g micro USB charging and power supply support (and charge for the AC adapter to this product, USB cable is not included.)