Casio G-Shock Quartz Black Dial Black Resin Strap Mens Watch GBD-100SM-4A1ER The Case: The Casio G-Shock GBD-100SM-4A1ER features an eye-catching semi-transparent red case that is made out of resin. The design of the bold case remains true to the rugged form of a classic G-Shock. It exhibits a fixed bezel and four recessed push buttons that can be used to operate between the watch’s functions. The case is secured down by four screws, it also features Casio’s ‘Patented Hollow Core Guard Structure’ that protects against impact and vibration. Further protection is offered against scratches and shattering through the hard mineral glass. The Dial: The black dial exhibits a digital display that uses a high quality MIP LCD display. It also uses a super illuminator function which ensures the dial remains easily readable. The Casio logo is located at the 12 o’clock on the dial\'s chapter ring.  The Strap: The black strap is made out of a soft urethane resin material. It is easily adjustable thanks to the dial’s numerous band holes that let you adjust it to your particular fit. It features a standard plastic buckle.  The Functions: This timepiece is powered by quartz mechanisms which provide it with an accuracy of +/- 15 seconds per month. It has a training function which offers: Display of distance, speed, pace, and other calculated values based on GPS or accelerometer data, auto/manual lap times, Auto Pause, Auto Run Timing Start, target alert setting (time, altitude, calories burned) on/off, training display , Life Log Data- Daily data display (step count), Monthly data display (running distance). It is water resistant to 200 metres, which means it can be worn when diving.  If you have any questions please click here Click here to join our facebook and Instagram !