Digital watch model PRT-40E, includes altimeter, barometer and thermometer functions, made by Casio Electronics Company Ltd. Casio digital quartz wristwatch, model PRT-40E, 1998. 1998
Digital watch, with built in infra-red transmitter, used to control household appliances, made by Casio Electronics Company Ltd, model CMD 40 Multi-function Casio digital quartz wristwatch, 1998. 1998