Abstract: A Slap on Watch consists of a watch face or timepiece (22) that is attached to a slap on band (10). The slap on band includes the component of a bistable spring metal (12), which will coil when slapped against the appropriate object such as a human wrist. When slapped against the wrist, the Slap on Watch will automatically form to the wrist, securing the watch to the wrist. The slap on band exists in two states; the elongated state, and the coiled state. The watch face in this invention could consist of any combination or all of the following; a timepiece, cell phone, two-way radio, or wireless Internet device. The Slap on Watch provides a quick and easy method to transport these devices. The Slap on Watch also could be used as a toy for children.