Meet ARENA: a smart workout system the size of a suitcase that lets you perform hundreds of exercises indoors and outside. Measuring 36″ x 23.5″ x 9.5″, this fitness trainer can be controlled from your smartphone. It also offers resistance up to 200lbs. ARENA’s SmartWeight system automatically adjusts the resistance to help you maximize your workout.
The companion app syncs workouts to the box. ARENA lasts up to 30 days on battery. It weighs only 38lbs, so you can take it with you anywhere. It measures your power, volume, and other important performance metrics to help you exercise safely and achieve your goals faster.[where to get it]