BOYA BY-WM8 Pro K4 UHF Wireless Condenser Microphone Wired Mic Set for Camera Interview Live Streaming •With dual channel wireless receiver •48 UHF channels •Selectable stereo and mono modes •Can be used as a microphone and audio transmission tool •Optional mute function •Simple and easy to read menu •Automatic key lock function •Output sound through headphone monitoring (receiver) •Continuous operation for more than 6 hours •Operating range up to 100 meters (up to 300 meters without obstacles) •Transmitter and receiver powered by two AA batteries •Specification: •Transmitter: •RF output power: ≤10mw •Spurious emissions: 250nW or less •Audio input interface: 3.5mm interface •Reference audio input level: -60dBv (MIC input,0 dB attenuation) •Reference deviation: ±5 kHz (-60dBv,1 kHz input) •Input frequency range: 20Hz-20KHz •Distortion: 0.5% or less •Power supply: 2 x AA batteries (not included) •Battery life: about 6 hours •Receiver: •Audio input interface: standard 3.5mm interface •Signal to noise ratio: 80db •Distortion level: 0.8% (-60dBV,1KHz input) •Headphone output level: 60mW,32 ohms/1KHz •Audio output level: 120V •Channel number: 48 •Power supply: 2 x AA batteries,about 6 hours of use time (not included) •Size: 19.6*8*2.9cm •Weight: 130g Package included: •1 x Wireless Microphone •1 x Carrying Bag •1 x English User Manual •1 x Receiver •1 x Metal Clip •1 x 3.5mm Output Cable •1 x XLR Output Cable •1 x Hot Shoe Adapter •1 x Transmitter •1 x Wired Microphone •1 x Lavalier Clip •1 x Windproof Foam Cover