From a retired engineer who enjoys restoring worthy vintage sewing machines...
OK, so this is not a 'vintage' machine. But with cast metal frame and metal gears in the hook drive, the Singer HD series mechanical machines are more capable than your typical computerized machine. And the 4452 comes with some useful extra accessories, like a walking foot and hump jumper.
This has seen very little use and is in like-new condition. It has been thoroughly serviced and sews great. It comes with the foot pedal, dust cover, instruction manual, and all original accessories. Tensions are set up for standard Coats & Clarke Dual-Duty XP thread.
For more info, check out these online resources:
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Singer's promo video for the 4452:
https://www.youtube.com/watch?v=7T8K3gPYOqs
SewingMastery has a whole series of videos on the 4452 and how to use its features:
https://www.youtube.com/watch?v=Npr8k12MUgA&list=PLri6UA9U9QAJ6Ud7zTJNTAXSsDzkMJ-XX
You can download the instruction mannual from the Singer website:
https://svpworldwide.widen.net/view/pdf/gzmqmdoqve/IM_44434452_471340047A_EN.ES.FR.pdf?t.download=true&u=cko5pg