The folks at Singer have come up with a complete line of heavy duty mechanical sewing machines.Although nearly all of the Singer Heavy Duty sewing machines look pretty much alike, there are some very real differences that discerning sewers should be aware of.First of all, the folks at SVP – Singer/Viking/Pfaff – sell their machines in three major categories and seem to be making an attempt to separate their machines accordingly.I… The products' availability (subject to change) information displayed on the online store at the time of purchase will apply. Machine Size (15.5 x 6.25 x 12) Machine Weight (14.6) Box Size (17.5 x 9 x 13.5) Amps (0.7) Watts (84) Volts (120) Hz (60) Warranty (1yr / 25yr) Find Complete Warranty Terms Here. REVIEWS What do you want to know about this product? Awesome, they look the same and seem to have the same functions so … 1 month ago. Singer 4411 vs Singer 4423: You Will Thank Us For This Comparison When you buy through links on seworbit.com, we may earn an affiliate commission. SINGER or INSPIRA branded bobbins are recommended for best results. SINGER 4423 Sewing Machine (Best For Leather) Shop now at Amazon. The products' availability (subject to change) information displayed on the online store at the time of purchase will apply. With 23 built-in stitches among which are decorative, basic, stretch and buttonhole stitches, the Singer 4423 is ready to provide the best experience that you ever had. Singer 4423 vs 4432 – Detailed and Unbiased Side by Side Comparison When you buy through links on seworbit.com, we may earn an affiliate commission.