This was easy enough for the most non- mechanical person ( me) to use right out of the box. Remove - able top that holds the foil cutter. Everything worked easily and smoothly.  Corks unscrew with out splitting or chipping.  Four instead of five stars because like so many products today, it is made from a light weight plastic that I cannot imagine will hold up forever. But the low price so far makes it a deal. 
***UPDATE: 18 months later and plenty of use, it works really well. GREAT gift. so changed to 5 stars

Pros: Price, ease of use.