Bluetooth version: V4.1 NFC Function Voice prompt: Chinese Talk/music time: About 8 hours Charging time: About 1-2 hours Frequency Response Range: 20-20000Hz Volume Control: YesActive Noise-Cancellation: YesSensitivity: 100±5dBPlug Type: USBSupport Memory Card: NoWaterproof: YesResistance: 16Ω Function: For Mobile Phone,Sport,Common Headphone Support APP: No Line Length: None Communication: Wireless Support Apt-x: No Vocalism Principle: Dynamic Is wireless: Yes Connectors: USB With Microphone: Yes Control Button: Yes Style: Ear Hook Athlete sports Bluetooth headset Battery indicator: a high-performance lithium polymer battery Bluetooth indicators: Class 2 Support Agreement: Headset / handsfree / A2DP / AVRC / APT-X Talk time: about 8 hours Playing time: about 8 hours Standby time: about 180 hours Brand No Brand SKU OT776EL14C184NAFAMZ-255588 connector_1 3.5MM Compatible Devices Not Specified Wearing type In-Ear wireless_connectivity Bluetooth