Bernina B720 Computer Sewing Machine, 5mmZZ, Auto Threader & Trim, Foot Lift, Pivot, Speed Control, Extension Table. Optional Embroidery, BSR 110/240V

BERNINA Adaptive Thread Tension. The BERNINA Adaptive Thread Tension, a BERNINA innovation, provides ideal thread tension while sewing to achieve perfect stitch quality on both sides of the fabric. Once the tension is set according to the thread and fabric used, BERNINA Adaptive Thread Tension will constantly check the thread tension, adjusting it automatically if needed. It produces excellent sewing results, all achieved without even pressing a button.