I have a 603 T&S I bought from Goodwill on impulse. I think it is the same machine design. It takes a plastic bobbin which you can empty by simply twisting apart. But you don’t need to empty the bobbin or unthread the needle to fill the bobbin. All you do is press a small button, raise the presser foot and wind the thread around the foot screw, step on the foot pedal and the bobbin winds in place. Nice, right? The needle plate pops out for cleaning and changing. No screws to remove. You can still buy those bobbins at Joanns. I really like piecing on the Singer Slant. So much visibility and control. I almost forgot the best part, the stitch. This machine has the most beautiful straight stitch of all my machines. One thing I don’t like is that plastic bobbin. You can’t really fill it and if you go over the designated fill line it snaps in half. Not the worst problem since putting thread on the bobbin is pretty easy. The 603 has steel gears but I think the 700’s have nylon. If you decide to clean it up careful with the oil around that nylon. Bet you can download a free copy of the owners manual off the internet. Good luck