A Casio Mudmaster watch composed of a black carbon fibre reinforced case and black resin strap with a buckle clasp. This impressive watch is designed to endure an even higher level of toughness and withstand the harshest land environments. The new extreme shock resistant Carbon Core Guard structure integrates the case and back cover into a single carbon Monocoque unit to protect against severe impact. Strong, practical, and supplied with a vast array of functions, this watch is perfect for any scenario. Accuracy +/- 15 seconds per month Altimeter This function counts all the metres that have been ascended, giving you the difference between the starting and stopping altitude at a glance. A built-in pressure sensor measures barometric pressure, which is converted to relative altitude up to a maximum 10,000m. Altimeter data memory Up to 40 sets of elevation data can be stored in the watch's data memory and re-accessed at any time. Each of these data sets consists of a measured