Features: Improve consistency through precise weight measurement capabilities, that allow for better analysis and adjustment of equipment settings, before every swing. Using advanced electric line marking technology that supports accurate ball surfaces designs, along with easy angles calibration, and operations focused usability. Builted in sensors offer consistent data feedbacks, adapting to various ball sizes for efficient golfs training support. Designed for portability and versatility, this golfs ball line marker serves as necessary precisions alignment device. It is suitable for adults, professionals, beginners, and families, enhancing both casual and competitive play. Specifications: Component: Plastic Shell Size: about 15.5x19.5cm/6.1x7.68inch Package Includes: 1pc golfs Electric Scriber note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.