Hollyland Lark M2 Duo Lightning Mic Wireless Microphone

Mic Sensitivity : -37 dBV ± 2dB @ 1 KHz, 94dB SPL
Wireless Modulation Mode : GFSK 2 Mbps
Wireless Transmission : 2.4 GHz Adaptive Frequency Hopping (AFH)
Transmission Range :
Mobile Version: Up to 1000ft (300m) for LOS/200ft (60m) for NLOS
Camera Version: Up to 1000ft (300m) for LOS/130ft (40m) for NLOS
Mic Polar Pattern : Omnidirectional
Frequency Response : 20 Hz–20 kHz
Signal-to-Noise Ratio : > 70dB
Sound Pressure Level : 115dB SPL
Bit Depth : 24-bit
Sample Rate : 48 kHz
Battery Voltage : 3.8V
Battery Capacity : 97 mAh (TX), 750 mAh (Mobile Version Charging Case)
Operating Time : About 10 hours (TX)
Charging Case Operating Time : > 2 times charging for 2 TX at the same time (Mobile Version)
Charging Time : About 1.5 hours (TX), About 1.5 hours (Mobile Version Charging Case)
Charging Temperature : 0° C to 45° C
Operating Temperature : –10° C to 45° C
TX Dimensions : Approx. D26mm x 9.9mm (1.0” x 0.4”)
Mobile RX Dimensions : Approx. 40mm x 16.5mm x 9mm (1.6” x 0.6” x 0.4”)
Mobile Version Charging Case Dimensions : Approx. 75.8mm x 49.8mm x 35mm (3.0″ x 2.0″ x 1.4″)
Weight : TX:9g (0.3oz) ; Mobile RX: Approx. 6g (0.2oz) ; Mobile Version Charging Case: Approx. 65.6g (2.3oz)