Faster, stronger and runs longer. Taking the bright, front/rear LED lights, all-round suspension and combining it with a maximum speed of 12 km/h, the S425 is fully legal for road use as well as on pavements. The increased wheel height (30cm) will help to tackle those usual outdoor obstacles with ease. The larger battery size of 55Ah will help to power you further travelling distances. Four years old. Used very little by senior gentleman. Front basket, and rain cover.