Description: This microphone is wireless, more freedom, you can move freely during use. It adopts UHF professional automatic frequency technology to provide stable sound transmission. It is made of high-quality materials and has a long battery life, so you can use it for a long time. It also has an LED display that shows the battery level and signal strength in real-time. Specification: Name: Wireless Microphone Model: DD05 Microphone Type: Dynamic Channels: 2 Input voltage: 3v Built-in battery capacity: 1000mAh-1200mAh Battery life: 6-8 hours Signal-to-noise ratio: ≥75dB Frequency Response Range: 30Hz-15kHz Packing List: Microphone*1 Receiver*1 Rechargeable battery*2 Anti-skid rings*1 3.5 Adapter*1 Charger*1 Cotton head*1 Manual*1