This Casio watch is perfect for those who love retro - style gadgets and need a calculator on - the - go. Whether you're in the office, at school, or just out and about, it's a handy companion. It weighs 72g and has a case diameter of 44.9*34.8*10.6mm. The stainless - steel band gives it a durable and stylish look, and it can withstand splashes with 30mm water resistance.