Fanfan is a company specializing in the production of sports and leisure products. If you don't like the repetitive style of traditional wrist strengths, you can try the Wrist Mechanics: Wrist Mechanics are exercised by turning the twisted handle with different rotation directions (see how to use them). However, its disadvantage is that the quality is slightly inferior and the durability is average. The price is more expensive, 68 yuan, which is less cost-effective.