Tissot gents PRX Powermatic watch in stainless steel with an ice blue dial perfect for a modern, fresh look. This watch has an automatic movement with an 80 hour power reserve. 40mm case. Scratch resistant sapphire crystal, anti reflective glass. If you are looking for a slim, smooth watch with an authentic ‘70s feel, look no further than the PRX Powermatic 80. Created for those with an eye for design, the PRX brilliantly pairs twenty-first century features with a Tissot case shape from 1978. 100m water resistant.