BOYA Omic-U 2 Transmitter + 1 USB-C Receiver,Button Shape Wireless Lavalier Microphone - White •Also available in 48kHz HD audio when noise cancellation is enabled •Wide range 20-20,000Hz frequency response - provides exceptional high quality sound •Built-in rechargeable lithium-ion battery provides over 5 hours of recording •USB-C digital output - universally compatible with computers and Android mobile devices •The wireless working range is up to 50 meters •The magnetic clip is removable •The charging box has wireless charging function •Specification: •Omic TX Transmitter: •Transmission method: 2.4GHz digital band •Polar mode: omnidirectional •Antenna type: PIFA •Operating distance (barrier-free): 50 meters •RF output power: 10dBm •Distortion: ≤0.1% •Frequency response: 20Hz-20kHz •Sampling rate: 48kHz •Bit depth: 16bit •Signal-to-noise ratio: ≥80dB •Audio input: built-in microphone •Built-in battery capacity: 50mAh •Power supply mode: built-in lithium battery power supply/charging box contact charging •Battery life: about 5 hours •Charging time: about 2 hours •Weight: 15.5g •Size: 36*36*9.7mm •Working temperature: 0 ~ +50℃ •Storage temperature: -10 ~ +50℃ •Omic receiver: •Transmission method: 2.4GHz digital band •Polar mode: omnidirectional •Antenna type: PIFA •Operating distance (barrier-free): 50m •RF output power: 10dBm •Distortion: ≤0.1% •Frequency response: 20Hz-20kHz •Sampling rate: 48kHz •Bit depth: 16bit •Signal-to-noise ratio: ≥80dB •Audio output: USB-C digital output •Power supply method: power supply from external device •Weight: 6g •Dimensions: 35.5x18.5x10mm •Working temperature: 0 ~ +50℃ •Storage temperature: -10 ~ +50℃ •Omic CC charging box: •Built-in battery nominal voltage/capacity: 3.7V/ 300mAh •Charging time: about 3 hours •Charging interface: Type-C interface/wireless charging •Number of cycles available for charging: 2 times (2*TX) •Weight: 90g •Size: 96x46.5x37mm •Working temperature: 0 ~ +50℃ •Storage temperature: -10 ~ +50℃ Package included: •2 x Lavalier Microphone •1 x Receiver •1 x Charging Case •1 x Charging Cable •2 x Windproof Cover •1 x Storage Bag •1 x English User Manual