Long lasting battery life, built-in charging case: The wireless microphone can pick up sound for up to 7 hours on a single charge, and with the charging case, it can last up to 48 hours of battery life. Charging takes 5 minutes, and picking up sound takes 1 hour 30 meter long-distance wireless transmission: 2.4G wireless transmission with strong penetration, stable signal, barrier free distance of 30 meters, unrestricted recording and pickup 360 ° omnidirectional pickup: High sensitivity pickup for clearer sound, high fidelity sound quality, mini and compact size Intelligent noise reduction, clearer and more delicate vocals: up to 48KHZ stereo recording, filtering multiple types of noise for different noise environments Multi-level noise reduction and reverberation modes, can be switched freely: mute mode, noise reduction mode, reverberation mode, suitable for different scene applications Specifications: Frequency band: 2.4GHz Wireless distance: about 30m (open environment) Power supply mode: polymer lithium battery Battery capadty:370mAh Charging voltage: DC5V/0.3A Charging time: about 1.5H Endurance: about 7H Microphone type: full pointing capacitor? Head sensitivity:-38dB Microphone frequency response: 20H~20kHz Sample rate: 48KHz Weight: Transmitter TX: 28.5g; Receiver RX: 285g