Fully function works The Casio Altimeter Twinneedle Sensor Digital Quartz SGW-300H Men's Watch is a vintage piece from the 1990s with a black bezel and a gray-green case. This classic casual style watch features an altimeter function, LED display, and a quartz movement. With a water resistance of 10m and a case thickness of 13mm, this watch is practical for everyday wear. The two-piece strap is made of polyester and nylon, with a lug width of 16mm, making it comfortable to wear for an 8.6-9 inch wrist size. Made in China, this timepiece is a unique and functional addition to any watch collection.