Using this model is easy. Just connect it to a DC power source for analog control and watch it run. Since it has a moderate motor/gearbox noise, don't be alarmed if you hear some sound during operation. When handling, be gentle as it's a fragile brass model. Store it in the original box and foam to protect it from damage. For maintenance, keep it in a dry place to prevent further tarnish. If you notice any loose parts, you can do minor solder repair as shown in the photos. But if you're unsure, it's best to consult an expert. When shipping internationally, be aware that you'll be responsible for import duties and tariffs. And if you're not satisfied with your purchase, you can return it within 30 days for a full refund, just pay for the return shipping unless the item arrived damaged.