A binding device for retaining footwear securely to a snowshoe, ski, snowboard, and other apparatuses for traversing mainly over snow and ice covered terrain. The electric motor has a hollow cylindrical magnet assembly disposed around a hollow cylindrical holder, and a shaft rotatably supported in a housing, with a hollow region being defined between the shaft and the holder. In embodiments of the present invention, an initial dielectric structure is formed having a first low-K material overlaid with a standard-K material. 5\u02dc10 parts by weight of a molybdenum compound having an average particle size of 2\u02dc5 microns is used as the smoke suppressant. It can provide a blind person with enough information to move about and be aware of barriers.