Description “Green Lion Miami Smart Glasses -Frequency Response: 20Hz-20kHz -Built-in Microphone and Speaker -Transmission Distance: 15 m -Charging Type: Magnetic -Sensitivity: 125 ± 3 dB -Impedance: 8Ω ± 15% -Blue Light Filtering -Talk Time: 3-6 Hrs -Playtime: 4-6 Hrs -Battery: 85mAh -Bluetooth: V5.3 -Button Control -Voice Assistant -ENC”