📐 Size : 22 x 19 x 8 cm (or) 8.6 x 7.4 x 3.1 inches

✅ Wireless

✅ External USB drive

✅ External memory card

✅ Original singing and backup switch

✅ 2 microphones 

✅ Volume +/-

✅ Built-in lithium battery

✅ Portable handle

✅ Battery : 3.7V - 1200 mAh (Rechargeable lithium battery)