The Casio AE-1000W-1BVEF CASIO Collection watch combines a 43.7mm round shaped resin case and black resin strap with a traditional buckle. It has a digital dial which is protected beneath plastic glass. Power is generated by the quartz movement. This model also has a water resistance of up to 100 metres. Automatic calendar Once set, the automatic calendar always displays the correct date. Button tones on/off Watch will not beep when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated. 5 daily alarms LED light Resin band Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties. Stopwatch function Timer - 1/1 min. - 24 hours Countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. The time can be set to the nearest minute and up to 24 hours in advance. Ideal for people who need to take medicines every day or those who do interval training. 12/24-hour timekeeping Times can be displayed in either a 12-hour or 24-hour format. World time function Displays the current time in major cities and specific areas around the world. - Total Weight 40g - Case Depth 13.7mm - Case Width 43.7mm - Watch Movement Quartz - Water Resistance 200 metres