SX39 For USB-C Type-C Port Live Broadcast Wireless Microphone Lavalier Noise Reduction Microphone 1. Equipped with digital and analog outputs, compatible with Type-C and multi-functional 3.5mm interface 2. Automatic noise reduction, reverberation, monitoring, external playback, and mute functions 3. Wireless pairing, automatic connection after power on, easy to operate 4. Compatible with various devices such as smartphones, computers, tablets, speakers, amplifiers, cameras, etc. Specifications: 1. Microphone head: digital microphone 2. Input voltage: 5V 3. Microphone battery: 200mAh 4. Receiver battery: 200mAh 5. Battery life: 12 hours 6. Signal-to-noise ratio: 64DBM 7. Transmission delay: 30MS 8. Sensitivity:-42DB 9. Frequency response: 20-20KHZ 10. Transmission distance: up to 15M without obstacles Notice: 1. The laptop needs to be set to microphone input before use. 2. Only applicable to Type-C devices with OTG function (production after 2019 is better). 3. Some Android phones need to activate the OTG function when plugging in the USB-C receiver.