Casio Black Digital Calculator Watch Model CA-53W With Adjustable Strap

Casio Black Digital Calculator Watch Model CA-53W With Adjustable Strap. From Website: The case of the watch measures 43.2 by 34.4 by 8.2 millimetres and the watch has a weight of 24 grams. The case has a lug-to-lug width of 42 millimetres and a thickness of 8 millimeters (including the raised area of the case back).[5][6] The case of the watch is made from resin, with a plastic watch crystal, and a stainless steel case back with the model and module number stamped on it which is secured with four screws. The inner lug width (where the strap attaches) is 20 millimeters, and the strap is made of polyurethane. The strap can be swapped or replaced. The CA-53W features an 8-digit calculator with basic operators, a 24-hour 1⁄100 second stopwatch which can measure up to 23:59.99. The stop watch can also record split times and 1st and 2nd place times. Other features include a daily alarm, a full auto calendar up to the year 2099, an hourly signal and a dual time mode. The watch is claimed to be accurate to ±15 seconds per month and is powered by a CR2016 3-volt lithium button cell.[5] The watch has basic water-resistance which for Casio Digital watches means splash-proof (washing hands or rain).[7] The display of the watch lacks internal illumination.