How many riding modes do marsant'sx bikes have?

Dr. Michael Turner is a leading expert in electric bicycle powertrain engineering with more than 12 years of experience in battery systems, motor efficiency optimization, and lightweight frame design. He has collaborated with several global e-bike manufacturers on improving long-range performance, fast-charging safety standards, and smart controller technology. His research focuses on increasing energy density while maintaining durability for urban commuting and off-road models.