adidas Smart Soccer Ball Training tool for placing kicks Integrated sensor package records strike point, speed, spin and trajectory when you kick the ball Compatible with Bluetooth Smart capable devices using iOS (vers. 7 or later), Android (4.3 or later) or Windows 10. Size 5 regulation weight, highest quality thermal bonded 32-panel ball; Requires inflation Battery life: approx. 2,000 kicks/one week; Charging time: approx. 1hr; Package includes charging base and AC power plug