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 Square Case - Resin Glass - Solid Caseback - Easy to Press Button Arrangement. Digital Dial - Black Digital Font and Arabic Numbers. 15mm Black Resin Strap with Black Pin Buckle.Water Resistant. Please press and hold the button from the right side for a few seconds and the CASIO sign should come up