This is a great battery-operated wine opener!  I had one.  When my friends saw me using it, they wanted one, too.  So,  I bought them all one.  The top of the opener has a cutter.  I've had my opener for years and it continues to cut sharply each time.  I've ordered this particular style for my 80 year old uncle who drinks a glass of red wine each night but suddenly couldn't open the bottle with other openers.  The only strength you need is to hold the bottle while the opener does all of the rest of the work.  It's wonderful.  I highly recommend this opener.