This Byron Wireless Mesh Finish Doorbell Set is portable and comes in white. It features 16 selectable melodies and offers a wireless range of up to 150 meters. The bell push has an IP44 rating, providing protection against splashes. The doorbell requires 3 AA batteries which are not included. Dimensions are 100 x 70 x 30 mm for the doorbell and 86 x 36 x 17 mm for the push button.