Feature: HIGH-QUALITY SOUND & NOISE REDUCTION: The wireless microphone produces high-quality clear sound without distortion and effectively filters out noise. 1200mah BATTERY LONG LIFE: 3 rechargeable and removable 18650 batteries, no need to buy batteries, 10 hours of operation with a full charge in 3 hours. The microphone display shows battery status and signal strength in real-time. The microphone and receiver have been professionally tested for high impact strength, lighter weight, and higher abrasion resistance. Stable Signal: The high-sensitivity professional dynamic microphone extends the working range to 50m (160ft) and solves the problem of tangled wires. The wireless microphone with a built-in cardioid pickup pattern provides a clearer signal and better sound quality, reducing the chance of interference and dropped calls. EASY TO USE: Simply plug the receiver into the microphone jack and the receiver will automatically synchronize its frequency with the microphone, Batteries, adapter plug/cable, and other accessories are included and ready to use upon receipt. COMPATIBLE WITH A VARIETY OF DEVICES: The microphone is designed for devices with a microphone input of 6.35 mm (1/4 inch) or 3.5 mm (1/8 inch). Ideal for karaoke machines, mixing consoles, jukeboxes, audio amplifiers, PA systems, active speakers, voice amplifiers, truck speaker systems Specifications: Connection range: 160 feet (50m). Battery capacity: 1200mah lithium battery Operating time: 8 hours Charging time: 3 hours Quantity: 3 × rechargeable and replaceable batteries for microphone and receiver Frequency Response: 30hz-20khz Operating temperature: -10℃-55℃ How to use: 1. Insert the rechargeable batteries into the receiver and microphone. 2. Connect the receiver to the microphone input of your audio device. 3. Turn on the microphone and receiver. Package includes: 1 x Receiver 2 x Wireless microphone 1 x Charging line 2 x Microphone sponge