So my favorite and recommended electrical heat pack is Bremed BD 7800 electrical heat pack, which:
- it's not a new product to me professionally and personally, and it's been around since 1991; Italian designed and engineered (read more in the recommended electrical heat pack page)
So when you purchase it, it comes in a box, and when you open up the box, you'd see:
There is a 2-pin europlug which you need to plug into a power socket (use an adaptor if it's easier for you), which is attached to a white remote with 3 settings:
For 1 and 2, I note that I write as "Medium" and "High" heat, but heat can be subjective, one person's high heat can be low and vice versa, so always be safe and careful and go through the safety precautions found here.
It'd take 5-15 minutes to heat up, and if it's for your hands or feet, and if you like it warmer, you can take a peek at my "heat sandwich method"
Then place it at the body part or limbs as preferred:
The method of application is generally:
And methods differ based on body parts eg electrical heat pack for back application is very different to electrical heat pack for hands as well as preferences (higher heat = lying on it or heat sandwich; lower heat = draping)