I really enjoyed it, very high build quality, excellent material, technology and very short response time (no delay in reaction), very attractive and respectful packaging that shows respect for customers, I am a mechanical engineer and a university professor in mechanical design and simulation And I really pay attention to the type and standard of design and the type of materials used, and I am really happy to know Satechi.The ergonomic points of this product have been fully observed in the production process, and the comfort of using it for long periods of time without causing fatigue and negative physiological effects has been fully considered in the design.