Why do you need to measure your wrist before buying a Fitbit? Fitbits come in two standard sizes small and large (though you can get an X large by ordering models through the Fitbit site). It's a little strange that there's not a medium or regular size.
Cincinnati is in the bluegrass region of Ohio. A major city of the Ohio Valley, Cincinnati is situated on the north bank of the Ohio River in Hamilton County, which is the extreme southwestern county of the state of Ohio. It is midway by river between the cities of Pittsburgh, Pennsylvania and Cairo, Illinois.
The county was erected May 1, 1803, from Hamilton County, and named for Dr. Joseph Warren, a hero of the Revolution who sent Paul Revere on his ride and who died at the Battle of Bunker Hill. Warren County is part of the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. Along with Butler County, Warren County comprises the geographical center of the Cincinnati-Dayton Metropolitan Region, home to 3.3 million and the 14th most populous in the United States.