Features: Digital wireless microphone system (dual transmitter + one receiver), compatible with smartphones, SLR cameras, consumer cameras, PCs, etc. Adopting 2.4G wireless technology, it has strong anti-interference ability and high performance; it has an operating range of up to 50m (164ft) (no obstacles). Omnidirectional lavalier microphone with clear recording, suitable for interviews, audio recordings, video recordings, etc. Comes standard with a camera hot shoe mount and rear clip, making it easy for you to install the transmitter and receiver. Lightweight and compact, it's easy to carry and comes with a hard case for easy storage and portability. Specifications: RF Modulation: GFSK (Gaussian Frequency Shift Keying) Frequency Band: 2.4G (2405-2478MHz) Frequency Response: 35Hz-14KHz+/-3dB Signal/Noise: 84dB or higher Distortion: 0.05% or less (32ohm, 1 KHz, 65 mW output) FR output level: 3mW Headphone output level: 32hom, 65mW Receive sensitivity: -90dB+/- 3dB / 0dB=1V/Pa, ​​1KHz Audio input connector: 3.5mm mini jack operating range : 50m (164 ft) (No Power Requirements: 2* AAA batteries (not included) Power Consumption: Transmitter: 3V/70mA Receiver: 3V/70mA Transmitter and Receiver Size: 4.5*7*3.5cm/1.8* 2.8*1.4 inch transmitter and receiver Weight: 47g/1.7oz (without battery) Note: Smartphone and stabilizer shown in the picture are not included. Packing list: 2 * Transmitter 1 * Receiver 2 * Collar Clip Microphone 1*3.5mm to TRS Audio Output Cable1*3.5mm to TRRS Audio Output Cable1*Cold Shoe Mount1*Hard Case