Green Lion 3-in-1 Wireless Microphone USB-C Features:

• Microphone: Digital Silicone Mic
• Input: 5V
• Battery Capacity (Mic): 60mAh
• Battery Capacity (Receiver): 80mAh
• Battery life: 3-4 Hours
• Signal-to-Noise Ratio: 64DBM
• Transmission Delay: 30MS
• Sensitivity: -42DB
• Frequency Response Range: 20-20KHz
• Transmission Distance: Barrier-Free 20m-30m