Style: In-EarResistance: 9��Plug Type: WirelessSensitivity: 120��5dBConnectors: USBFunction: Bluetooth，Noise Cancelling，Microphone，Common Headphone，For Routine Office Work，Wireless Headphone，For Mobile Phone，Portable，For iPod，Sport，Supports musicUnit Type: piecePackage Weight: 0.050kg (0.11lb.)