Four-digit portable paceclock features eleven training programs, 7" amber digits, a built-in rechargeable battery, a handle for easy transportation and mounted feet for placement on any surface. You can program the paceclock by utilizing the built-in switches on the side of the display or you can upgrade to the DKJC100 handheld unit which simplifies the creation of workouts. The optional controller comes with a 12 foot cable that plugs into the side of the paceclock. Multiple displays can be synchronized for visibility at both ends of the pool. Can be mounted on the DKTPSC tripod stand (sold separately).