1、Small and Application scenes: The S900 wireless microphone can be used in scenes such as live interviews, live talks, video shooting, etc. 2、For OLED High Definition Display: With for OLED high definition display, real time control of microphone status. 3、Volume Adjustable: Both the transmitter and receiver can adjust the volume separately, which can be set according to recording needs. 4、Reduce Environmental Noise: One key noise reduction, the transmitter can be set to filter to process low frequency radio to reduce environmental noise. 5、Number of Channels: 100 frequency points can be adjusted in the same occasion, support 50 sets of equipment recording, multiple sets of use do not interfere with each other. 6、Applicable Device: Applicable to a variety of devices, can be connected to mobile phones, SLR camera, computer, mirrorless camera, ball head and other devices. Item Type: Lavalier Microphone Material: Plastic Color: As Pictures Shown Wireless Frequency Range: 550-590MHz Modulation Method: FW Audio Frequency Response: 40Hz-20kHz Directivity Type: Capacitive Omnidirectional Number of Channels: 100 (50 x A Channel, 50 x B Channel) Wireless Transmitting Power: ≤10mW Signal to Noise Ratio: ≥80dB Battery: Built in Lithium Battery 320mAh Endurance: About 5h Working Temperature: 0°C to 55°C Storage Stability: -20°C to +55°C Product Size: Approx. 56x42x15mm/2.2x1.7x0.6in Net weight: Approx. 37g/1.3oz 2 x Transmitter 1 x Receiver 1 x 3.5mm Microphone 1 x 3.5mm TRRS Audio Cable 1 x 3.5mm TRS Audio Cable 2 x Windproof Cover 1 x Phone Clip 1 x Charging Cable 1 x Manual