Over 80,000 units sold in Suruga online. 4 "Head Speed", "Ball Speed", "Estimated Distance" and "Meat Rate" are displayed simultaneously on one screen. Changes from the GST-3G correspond to the approach with expanded viewing range. Head speed lower limit: 59.2 ft/s (15.0 m/s) to 32.8 ft/s (10.0 m/s) and ball speed lower limit: 59.2 ft/s (20.0 m/s to 15.0 m/s). The number of swings is also possible. These upgraded features are also equipped with the top models. Can be used for left-handed players. Uses 4 AAA alkaline batteries. Makes a great gift for competition giveaways. We recommend cheaper than the same GST-5W (only the difference between the battery rechargeable, battery operated, or no SD card slot).