- More Powerful Motor for extra high sewing speed
- 23 Built-in Stitches basic, stretch, decorative
- One-Step Buttonhole for consistent results every time
- Heavy Duty Metal Frame for long lasting durability
- Heavy Duty Accessories for heavy fabrics

The Heavy Duty 4423 sewing machine is designed with your heavy duty projects in mind, from denim to canvas. Thanks to the machine's powerful motor, you have extra high sewing speed to save you time. With adjustable presser foot pressure, you can also sew very lightweight sheers, and the stainless steel bedplate allows fabrics to glide over the machine with ease. Create original costumes, sew personalized fashions or transform your home with new decorator pillows and curtains. Among the 23 stitches is a one-step buttonhole, giving you consistent results every time for projects you'll be proud to say you made yourself. The Top Drop-in Bobbin is not only easy to thread, it's easy to see so you won't run out of bobbin thread in the middle of a seam. Thanks to the SINGER Sewing Assistant App, help is available anytime you are, to help you learn how to set up to sew various fabrics and techniques. Online Owner's Class (+) Learn your machine's basics like threading the machine correctly, selecting stitches, making a buttonhole, changing the needle and more. Available online whenever your are! SINGER Sewing Assistant App (+) Use this App to help you learn about the parts of the machine, how to set up the machine to start sewing including threading the top of the machine and the bobbin, how to select stitches for various techinques, and more. Built-In Stitches (23) Choose from a variety of stitches for basic sewing, decorative sewing, and more One-Step Buttonhole (+) Buttonholes are sewn in one easy step. Just place the button in the buttonhole foot and the machine sews a buttonhole perfectly sized for that button, delivering consistent results every time. Built-In Needle Threader (+) Effortlessly threads the eye of the need