Model: dynamic / Driver unit diameter: 30mm / reproduction frequency band: 20Hz ~ 20，000Hz;Communication system: Bluetoothﾃつｮ standard Ver 3.0 / Output: Bluetoothﾃつｮ standard Power Class2 / corresponding Bluetoothﾃつｮ profiles: A2DP / AVRCP / HFP / HSP / corresponding codec: SBC / corresponding content protection: SCMS-T method;Power DC3.7V， built-in lithium polymer rechargeable battery / charging method: USB charging;Weight: about 157g (including built-in lithium polymer rechargeable battery);Accessories: Japanese manual， charging for micro USB cable