Focus on Seiko, More on Details
30/33 Speed Change Kit
Quality Inspection, Safety of Use
Quality testing is responsible to customers
Hard core frame-anti-fracture
The coarsened frame can carry more than 2 people, 50,000 rigidity tests, and the frame is strong and tough enough.
Fifty thousand fatigue tests - no fracture
Fifty thousand anti-fatigue tests to reduce cycling risk factor