94Fifty Smart Sensor Basketball for iPhone and Android 94Fifty is the official Smart Basketball of the National Association of Basketball Coaches Wireless battery charger included w/the ball, activate w/4 bounces, auto sleep mode after 5 minutes of inactivity, 8 hrs. of continuous battery life Indoor/Outdoor Weather Resistant Synthetic Leather; Regulation size, weight and spin Free app keeps history for up to 4 players; Unlimited app downloads; Ball discoverable by any compatible phone when not in use by another player Compatible With iPhone 4s and later, iPad 3rd Generation and later, iPod Touch 5th Generation and Android Devices