Doest keep time accurately!

On my 2 Nd ordered same watch.have an eco drive 9 yrs old and not a missed minute! This one keeps running 5 mins slow after few days so I charge in sun for 90 plus hrs and now a week later I'm 10 min ahead ??? This is a defective line in my opinion being a loyal eco drive line owner.watch is beautiful in appearance and band is great ,blue face is perfect but do I go for warranty for 3rd one?