Dewel Mini Electric Household Sewing Machine / Dual Speed with Power Supply / Small Household Sartorially belt Transformer This compact portable automatic dual-speed sewing machine can also be operated with 4AA batteries (not include) if there is a power failure. Light weight, versatile and practical has 2 speeds settings, tension adjuster, and automatic bobbin winder. This product comes with AC / DC adapter and pedal leaving the hands free for handing. Save time and money making perfect repairs and adjustments to your crafting pieces.