FEATURES : Even when the sewing materials is changed or even if the sewing process is difficult the machine will adapt itself to the circumstance and enables easy sewing. By the adjusting thread tension at a multi-layered part of the material or to the material thickness, the machine is adaptable to a broaded range of sewing materials. Great Needle penetration force : Powerful 400W motor outputs large amount of torque even at slow speeds so that strong needle penetration force can be obtained. This allows accurate sewing of heavy materials and joint. If the needles penetration resistance increases, such as when sewing heavy materials and materials with joints, vibration control (intermittent impact) automatically increases the penetration force. Condensed Stitching is Possible: This Feature is ideal for use when sewing thin materials that can easily pucker when reverse stitches are sewn. Condensed stitches have smaller sewing pitch and they help prevent fraying. Operating Noise of The Machine : The opener achieves a silent operating environment which has been obtained by the conventional ones. It guides the bobbin case with literally a “soft touch” to reduce bobbin thread tension, thereby helping tense the thread uniformly and produce beautifully finished seams.