4 in 1 WIRELESS KARAOKE MICROPHONES--Wireless Bluetooth microphone speaker for music playing, singing and recording anytime you want. WIDELY COMPATIBLE--Connect well with iPhone/iPad/Android/Tablet and PC via Bluetooth or audio cable. External TF card supported, max 32GB(not included) so you can also enjoy singing even without a phone. SUPERIOR SOUND QUALITY--Inner-magnet loudspeakers with the unique structure, professional tuning system, 3 layers of pop filter. All ensure less harmonic distortion for clear sound with wonderful effect. DURABLE BATTERY--Built in 2600mAh rechargeable battery with long lasting. Playing time up to 10hours when in 15%volume. Never worry about overheating and unstable current. ADVANCED TECHNOLOGY--Adopted top-notch cutting-edge technology with Mg-Al shell delicate appearance. The karaoke microphone is perfect for birthday party, wedding, family singing, travel, indoor&outdoor for endless karaoke fun. It's also a unique Christmas gift for your kids family or friends.