AB Circle Pro Machine with Digital Clock Timer From the same experienced fitness team who brought you the hugely successful AB Roller and AB Doer, comes the latest revolutionary fitness machine AB Circle Pro. AB Circle Pro gets you off the ground and targets your entire core from one side to another, front to back, a complete 360 degrees. It will help workout your upper, middle, lower abs and obliques all in one simple fun fat burning motion. Get a firmer, flatter stomach, just 3 minutes on the AB Circle Pro is equal to more than 100 sit ups.