Household handheld karaoke microphone wireless Bluetooth universal Speaker Karaoke Set Portable Microphone Audio Integrated Microphone Integrated Wireless Karaoke Microphone Buy Wireless Bluetooth Karaoke Microphone Mobile Phone Integrated Home 8 Best Wireless Karaoke Microphones: Everything You Need to Know. Product information: Model: YMMKF001 Microphone directivity: Cardioid Speaker: 5W 45mm Bluetooth version: 4. 2 Connection distance: 7 meters (no obstacle and strong interference) Battery: 3. 7V 850mAh Charging input: DC 5V 0. 5A Charging time: About 1. 5 hours Use time: About 4 hours Interface: USB Type C Size: 54mm X 200mm