The transmitter has an omnidirectional microphone that supports a 48 kHz 24-bit sampling rate, >70 dB signal-to-noise ratio, and a maximum SPL of 115 dB. Environmental noise cancellation reduces outside noise to deliver clearer sound in loud locations. Toggle remote video recording control by pressing down on the transmitter's onboard button twice. An internal 97mAh battery can power your transmitter for up to 10 hours at a time and can recharge via the included magnetic charging cable.