Hollyland Lark M2 Wireless Lapel Microphone Combo for iPhone, Android, Camera, PC and Laptop, Lightning, USB-C, 48Khz, 24-bit, 1000ft Range, Noise Cancelling, 40 Hour Battery

Specifications 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 TX: 3.87V Camera Version RX: 3.87V Mobile Version Charging Case: 3.8V Camera Version Charging Case: 3.8V Battery Capacity TX: 97 mAh Camera Version RX: 145 mAh Mobile Version Charging Case: 750 mAh Camera Version Charging Case: 1950 mAh Operating Time TX: About 10 hours Camera Version RX: About 9 hours Mobile Version Charging Case: > 2 times charging for 2 TX at the same time Camera Version Charging Case: > 3 times charging for all TX and RX at the same time Charging Time TX: About 1.5 hours Camera Version RX: About 1.5 hours Mobile Version Charging Case: < 1.5 hours Camera Version Charging Case: < 2 hours Charging Temperature 0° C to 45° C Operating Temperature –10° C to 45° C Dimensions TX: Approx. D26mm x 9.9mm (1.0″ x 0.4″) Mobile Version RX: Approx. 40mm x 16.5mm x 9mm (1.6″ x 0.6″ x 0.4″) Camera Version RX: Approx. 40mm x 25.7mm x 20.5mm (1.6″ x 1.0″ x 0.8″) Mobile Version Charging Case: Approx. 75.8mm x 49.8mm x 35mm (3.0″ x 2.0″ x 1.4″) Camera Version Charging Case: Approx. 86mm x 54mm x 39mm (3.4″ x 2.1″ x 1.5″) Weight TX: Approx. 9g (0.3oz) Mobile Version RX: Approx. 6g (0.2oz) Camera Version RX: Approx. 14.8g (0.5oz) Mobile Version Charging Case: Approx. 65.6g (2.3oz) Camera Version Charging Case: Approx. 111g (3.9oz) https://www.hollyland.com/product/lark-m2