Brushed DC motors are still popular in lots of fields, which include some electric scooters. Having said that, they are gradually replaced by the more compact and economical BLDC motors. Nevertheless, there are a variety of essential variances concerning the S2 designs that make both of these distinct bikes. https://www.electricscooter.ltd/2-wheel-foldable-honeycomb-tire-patinete-electrico-pro-electric-scooters/