1, level: a planet is the low level of table tennis, and Samsung ball is the highest level of table tennis. This level is expressed by the number of stars in the ITTF. The higher the number of stars, the better the quality and performance of the ball.

2. Parameters: The weight of Samsung ball is 2.64-2.53g, the hardness value is less than 0.80mm, and the roundness error is less than 0. 15mm. In contrast, the weight of a planet's sphere is 2.35-2.63g, the hardness value is less than1.10mm, and the roundness error value is less than 0.25mm, so the parameters of the three-star sphere are more accurate and the quality is more stable.

3. Suitable for competition: Samsung ball is designated as a professional ball by ITTF because of its high quality and stability. A planet is used for amateur competitions, entertainment activities or fitness exercises because of its low level.