Singtronic SP-224Pro – The World's First Truly Portable Rechargeable Karaoke Microphone System Engineered in Japan and launched in 2025, the Singtronic SP-224Pro sets a new standard in wireless karaoke technology. Unlike traditional systems that rely on external power or bulky batteries, the SP-224Pro features fully rechargeable lithium batteries built directly into both the microphone and receiver. With up to 6–8 hours of playtime per full charge, this microphone system is perfect for singing sessions anywhere — no power outlet needed. 🔋 100% Wireless. 100% Rechargeable. Both the mic and receiver operate cordlessly, making it easier than ever to sing freely and move around during performances. 🌟 Crystal-Clear Sound with Anti-Howling Technology Say goodbye to mic squeals and feedback. The SP-224Pro includes digital anti-howling circuitry for a smoother sound with no interruptions. 🏕️ Sing Anywhere Whether you're heading out on a camping trip, hosting an RV party, singing at the park or church, or just having a backyard get-together — this mic system goes wherever the party is. 🎶 No External Power Required Truly plug-and-play with zero power adapters or outlets needed. Just charge, turn on, and sing!