OVLENG FV811-Long Battery Headphones. Big Sound. All Day Comfort.

Immersive Bass, Long Battery Life, And All-Day Comfort — FV811 Is Ready For Work, Play, And Everything In Between. Speaker Sensitivity: 121dB ±3dB Frequency Response: 20Hz–20KHz Max Output Power: 30mW Microphone: 4015 Omni-Directional, Sensitivity -42dB ±3dB Siri Activation: Supported Battery Status Display: Supported Charging Overtemp Protection: Not Supported One-to-Two Connection: Not Supported Packing: 40pcs/Carton Carton Size: 61*44*45CM Carton Weight:23.6kg