Most accessory makers strive to create ultra-thin, lightweight and virtually invisible smartphone cases. Everyone, but not the British company DesirableBody. She released a unique iPhone case that can be used as a small dumbbell.
Indeed, the iPhone case called ToneFone is made of die-cast metal with a rubber coating and weighs between 1 and 1.5 kilograms, depending on the version. He, according to the developers, is able to turn ordinary smartphone use into a little fitness workout.
Sales of the heaviest case in the world will start in June this year. The cost of ToneFone weighing 1 kilogram will be 22.90 pounds, and for the 1.5 kilogram version you will have to pay 25.40 pounds. The case is compatible with iPhone 5 and iPhone 5s smartphones.