Ernest Sports ESB1 Golf Launch Monitor The NEW Ernest Sports ESB1 Portable Golf Launch Monitor, now positioned behind the golfer for better performance Larger hitting area, re-chargeable lithium battery, front panel display. Data Provided: * Ball Speed * Club Speed * Smash Factor * Spin Rate * Launch Angle and Distance Compare to Professional Averages AMERICAN MADE Works independently or with the free iOS ESB1 App Charging Cord Included Downloadable upgrades