Casio GW-2500B-1AER инструкция. operation (in the middle of the night). You also can perform manual receive or you. can set the time manually. • The watch will receive the time calibration signal automatically from the applicable. View watch Casio GW1500A 1AV Manual online or download in pfd format. Very often issues with Casio GW1500A 1AV begin only after the warranty period ends and you may want to find how to repair it or just do some service work. Setting the Digital Time and Date Manually.