Involvement:Expert (understands the inner workings) - Ownership:more than 1 month
How it works is simple. Install a pair of "AA" batteries (tip: use alkalines, not rechargeables). Hold it in your hand and pinch (gently but firmly) the two halves of the unit together for about 2-3 seconds. You'll see the element get red-hot. Open the unit and pinch it around the open end of a bag. Slide it across the opening and the element will rapidly melt the plastic to create a new sealed barrier. Un-pinching the unit will break the contact and cool the element, which can be touched without injury almost instantly. This means that even children can use it safely.
Batteries need to have full charge, otherwise it will take some time to seal the bag
The cheap-feeling nature of the unit. The whole of the unit is pressure molded plastic and doesn't feel like it would survive too many falls off the kitchen counter. The top half is held on with a simple hinge that doesn't open nearly as much as you'd think. Taken as a whole there's no other way to say it: It simply looks and feels cheap. A more ergonomic shape, better quality plastics, or even a textured finish to give it better grip would have improved this product immensely.
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