Smart Drive Technology (SDT) Smoother movement and less vibration Increased embroidery speed Better stitch quality The new BERNINA Smart Drive Technology (SDT) module elevates your embroidery experience with enhanced stitch quality, smoother and quieter movement and up to 55% higher embroidery speed. Compatible with: B 880 PLUS Crystal Edition,  B 880 PLUS AE,  B 880 PLUS,  B 880 Sterling Edition,  B 880,  B 830,  B 790 PRO,  B 790 PLUS Crystal Edition,  B 790 PLUS AE,  B 790 PLUS,  B 790,  B 780  B 770 QE PLUS Kaffe Edition,  B 770 QE PLUS,  B 770 QE SE Tula Pink,  B 770 QE AE,  B 770 QE,  B 750 QE,  B 735,  B 720  B 700