The watch arrived sooner than expected, in good time for Father's Day. He's had a succession of Casio watches, including the Water Sport model 108 that he relied on as a swimming coach, finding they lasted for many years. Since Covid forced his retirement at the age of 90, it's unlikely he'll be swimming in this one, but he loves the illuminating facility. He finds it comfortable, robust, not too bulky and found no trouble with the buttons. He'd already set the time before I managed to call up the manual.