Astro A20 Gen 2 Wireless

Microphone: uni-directional (0.24 x 0.11in (6 x 2.7 mm))
Ear coupling: Over-Ear, Neodymium (40 mm)
Wireless range: (15 m) , 2.4 GHz
Battery type: Rechargeable Lithium-Polymer
Battery charging time: 3.5 hours
USB connection type: USB 2.0 High Speed over USB-C
Frequency Response: 20 Hz - 20 kHz
Sensitivity: 100 dB SPL
Nominal impedance: 32 Ohm
Total harmonic distortion: < 3% (20 Hz - 10 kHz)
Battery weight: 0.60 oz (17 g)
Battery Wh: 1050 mAh