What should you do with old tennis balls? You can always throw them away or turn them into something more. Take hearO for instance. It is a Bluetooth speaker in an upcycled tennis ball. It is portable and ready to pair to your smartphone, tablet, and other Bluetooth devices.
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These speakers have a simple button that let you turn them on and off easily. Its grill pattern is developed to optimize sound projection. You can get your hands on these in November.
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