DS01 Outdoor Live Collar Microphone Collar Interview Recording Noise Reduction Wireless Microphone, Specification: Type-C USB-C (Black) 1. Material: ABS, electronic components 2. Applicable scenarios: video, interview, performance, meeting 3. Transmission delay: 15ms 4. Transmission distance: 30 meters 5. Frequency range: 2.4GHz 6. Frequency response range: 20-20KHz 7. Charging port: 8 PinType-C 8. Built-in battery: 100mAh lithium battery 9. Charging time: 1.5 hours 10. Continuous battery life: 4 hours 11. Compatible with 99% media devices and APP 12. Automatic pairing, plug and play, simple and convenient operation 13. 2.4G wireless transmission, stable signal, 30 meters long-distance wireless transmission 13. ENC dual-chip active noise reduction to achieve high-definition sound restoration 14. Bluetooth and 2.4G double-layer technology, real-time simultaneous reception of audio and video 15. 360-degree high-fidelity omnidirectional pickup, realizing a three-layer passive noise filtering system