Mic Mini 2S (2 TX + 1 RX + Charging Case) | Microphone direction type Omnidirectional | Maximum sound pressure level (1kHz) 130 dB | Equivalent noise level 22 dB | Receiver type Camera mount receiver | Transmitter type Built-in transmitter | Bluetooth Yes | Maximum operating distance 400 m | Battery life (max) 11 h | Battery technology Lithium-Ion (Li-Ion) | Receiver weight 19 g | Transmitter weight 12 g | Carrying case Yes | 1xNumber of receivers included | 2xNumber of transmitters included