TAOZG Foldable Bluetooth Headphone Wireless Headphone

Bluetooth Version: Bluetooth V4.0 + EDR RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band Radio Performance: Receives Sensitivity of -84dB/0.1% BER SNR: 95dB Rechargeable 400 mAh Li-Polymer Battery Speaker Drive Unit: 40mm Impedance: 32Ω Frequency: 20Hz ~ 20KHz Microphone: Omnidirectional HD Microphone Distortion: ≤ 0.1% Normal charging time: About 2-2.5 Hours Talking Time: Up to 10 Hours Standby time: UP to 250 hours Compatibility: For Mobile Phone, Tablet, PC, Notebook, MP3,MP4 etc