1. Transmission frequency: 2.4GHz 2. Transmission delay: less than 25ms 3. Operating frequency: 2.4G wireless connection 4. Transmission distance: about 20m (without obstacles) 5. Microphone: 360-degree omnidirectional condenser microphone 6. Input voltage: 5V 7. Microphone battery capacity: 70mAh 8. Charging time: about 50 minutes 9. Battery life: about 5-6 hours 10. Frequency response range: 20-20 kHz 11. Sensitivity: -38 dB 12. Signal-to-noise ratio: 64 dBm 13. Weight: about 25 g Features: 1. The microphone has a signal-to-noise ratio of 64dB, ensuring clear sound quality, reducing environmental interference, and recording every detail of the sound. 2. Built-in condenser microphone, 360-degree omnidirectional sound pickup, comprehensively capturing sound details and restoring a more three-dimensional and rich sound effect. 3. Both the transmitter and receiver feature digital displays and battery level indicators for easy monitoring. 4. Omnidirectional sound pickup with strong anti-interference capabilities, effectively identifying original sounds to meet recording needs in noisy environments. 5. 2.4GHz wireless technology chip, instant connection upon startup, automatic frequency matching. 6. Upgraded low-cut + dual ENC noise-canceling chips, achieving triple-layer noise reduction, with an environmental noise filtering efficiency of up to 99.9%. 7. Compatible with smartphones, computers, DSLRs, speakers, and other devices. 8. Built-in DSP bionic chip, simulates native effects, and after turning on the reverb effect, the sound is rich and has a greater sense of space 9. Lightweight design, mini size, comfortable to wear, portable and beautiful 10. Supports recording while charging your mobile phone, the receiver is equipped with a mobile phone direct charging interface, so you can record and charge your mobile phone at the same time