Foot Massager. Biju BJ8400. This powerful two speed massager incorporates industrial grade motors to give instant relief to overworked and tired feet. Used with or without shoes, it gives a deep, penetrating massage that can be felt up to your calves. Foot Massager. Biju BJ8400. This powerful two speed massager incorporates industrial grade motors to give instant relief to overworked and tired feet. Used with or without shoes, it gives a deep, penetrating massage that can be felt up to your calves. Widely used by both professionals and individuals, this massager is the best foot massage money can buy today.