The groove mini combines your favorite classic features with updated vocal-changing fun! Up your singing game with 6 fun voice-changing effects. Enjoy a light show that synchronizes to your voice. Connect your Bluetooth device and sing along to your favorite karaoke songs. Take this portable machine with you on your next road trip, tailgate, or pool party: simply add 6 c batteries (batteries not included). Number of Batteries: 6 Features: Bluetooth Compatible, Led Lights, Plug And Play Measurements: 5.4 Length/Inches, 11.2 Height/Inches, 8.3 Width/Inches Base Material: 80% Plastic, 20% Metal Country of Origin: Imported