Product Introduction The 3.5-inch full-color touchscreen for smooth and intuitive operation, with a semi-transmissive LCD for outstanding visibility even in direct sunlight. The slim design of the screen allows for ease of use and portability, with a quick button for quick access to the radar distance analysis function. Radar distance, head speed, ball speed, smash factor, and swing tempo are all measured. The radar measures estimated distance, head speed, ball speed, smash factor, swing tempo, and more. Practice mode for skill improvement. Long battery life of up to 15 hours in GPS mode.