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BLUETOOTH MICROPHONE WITH LIGHT AND MSUIC (POP SONGS/PREVIOUS TRACK 2. NURSERY RHYMES/NEXT TRACK 3. STORY/VOLUME+4. ANCIENT POETRY/VOLUME -5. VOLUME ADJUSTMENT/PAUSE 6. SOUND CHANGING EFFECT/MICROPHONE SWITCH WITH LIGHTING EFFECT/BLUETOOTH CONNECTION (LONG PRESS TO ENTER BLUETOOTH MODE), 3.7V LITHIUM BATTERY 500MAH, FULLY CHARGED CAN BE USED FOR ABOUT 3 HOURS)