This Control Company Traceable® Stick-It™ mini-clock is perfect for each individual work area. Bright hands and white sweeping second hand are easy to read. Rugged gleaming metal case is o-ring sealed making it water-resistant/dustproof. Supplied Velcro® and double-backed tape allow unit to be placed anywhere. Flat bottom permits standing on shelf, desk or bench. Precise quartz-crystal. Traceable to NIST for accuracy: To assure accuracy an individually serial-numbered Traceable® Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Unit is powered by a 2 year battery. Patent pending. Dimensions (Diameter x Depth): 1.6 x 0.3-Inch. Resolution: 1 Second. Accuracy: 0.013%. Weight: 1oz. Control Company #: 1003.