a’-tek watch directive:
146.96PSI :
PSI (pound per square inch) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch. 146.96PSI equals to 10atm or 100meters water resistant. Though the watches can’t be tested under deep sea but they all have been fully examined by our professional accurate testing instrument.

32768Hz :
The quartz frequency is highly stabilized in 32768 Hz, and the crystal is cut in a small tuning fork shape on a particular crystal plane. This frequency is a power of two, just high enough so most people cannot hear it, yet low enough to permit inexpensive counters to derive a 1 second pulse. This pulse-per-second output is the best to drive the watch.

Cr17Ni14Mo2 :
It means AISI 316L stainless steel material using on our watches. It is a high-density material and high resistance to corrosion. It will not oxidize or turn black.

πr2h :
Volume of a watch head.

PVD :
Physical Vapor Deposition is a term used to describe a family of coating processes. The most common of these PVD coating processes are evaporation and sputtering. All of these processes occur in vacuum at working pressure and generally involve bombardment of the substrate to be coated with energetic positively charged ions during the coating process to promote high density.
TiAl/CN : contains materials of titanium, aluminum, carbon and nitrogen; result in black color.
TiN/Cu : contains materials of titanium, nitrogen and copper; result in gold color.