5-40㎡, Omni-directional CE, FCC

"Pickup Range: 1 –150 ㎡ (10.76 sq.ft–1614.59 sq.ft) Audio Transmission Distance: 3000 m (9842.52 ft) Frequency Response: 20 Hz–20 kHz Sensitivity: -38 dB SNR: 85 dB (1 m 40 dB audio source SPL) 52 dB(10 m 40dB audio source SPL)1 kHz at 1 Pa"

"1-150㎡, Omni-directional Noise reduction CE, FCC"