The new Traceable® Stick-It™ Mini-Clock is perfect for individual work areas. With easy-to-read bright hands and white sweeping second hand, the mini-sized unit — 1.6 inch diameter (40 mm) x 0.3 inch depth (8 mm) — can be placed anywhere with the use of the supplied Velcro® and double-backed tape. The metal case is O-ring sealed making it water-resistant AND dustproof. Precise quartz-crystal accuracy is 0.013%. To assure accuracy an individually serial-numbered certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). The unit is powered by a 2 year battery and weighs 1 ounce.