Quartz Movement - Digital Function - Day & Date - LED Light - Daily Alarm - Hourly Time Signal - 1/100 Stop Watch - Auto Calendar - 12/24 Hour-Format. 38.2mm x 35.2mm x 8.5mm Black Resin Stainless Steel Square Case - Resin Glass - Solid Caseback - Easy to Press Button Arrangement. Digital Dial with Green Accents- Black Digital Font and Arabic Numbers. Black Resin Strap with Black Pin Buckle.Water Resistant to 50 Metres 5ATM Please press and hold the button from the right side for a few seconds and the CASIO sign should come up