Blink500 ProX B8 | 4-Channel Wireless Lavalier Microphone System4 audio tracks with mixing or independent output (Mono Stereo options) 14 hour onboard recording with 8 GB storage IP66 protection on transmitter for dust and water resistance, paired with a built in windproof capsule for any challenging conditions Stable wireless transmission up to 280 m line of sight 20 Hz 20 kHz frequency response with noise cancellation for 48 kHz 24 bit pristine audio recording Both transmitter and receiver run 11 hours per