Casio unisex watch from the Casio Collection. Digital watch made of steel with a case diameter of 33.7 mm and a waterproof rating. Sustainable resin strap with buckle. Functions: LED light; World time function; Stopwatch: 1/100 second: 24 hours; Timer: 1/1 second: 24 hours; 5 daily alarms; key sound on/off; Auto calendar; 12/24 hour format; 3 years: 1 battery. Reference is: LF-20W-8AEF.