JBL Bluetooth Wireless Portable Smart Microphone (KMC600)

This sounds like an exciting device! 

• Retro Nostalgic Design, Recreating Classics
• Supports Party Mode for wireless duet singing.
• One-click vocal reduction, usable for both solo songs and accompaniment.
• 10 sound effects, switchable at will.
• Equipped with a high-performance DSP chip to eliminate distortion and prevent feedback.
• 2600mAh battery capacity, providing approximately 3 hours of continuous singing.
• Not only supports connections with devices of the same model but also interconnects with KMC300/500.