This is a Casio Pro Trek. It has a triple sensor that can measure temperature and atmospheric pressure. The size of the dial is shown in the latter half of the images, so please refer to them. I have disinfected it with alcohol and checked its operation before listing it, but I do not guarantee its continued operation in the future, so please understand. This is a one-of-a-kind used item, so I do not recommend it to those who are looking for the quality of a current new watch. If you have any questions, please feel free to ask. Instant purchase is welcome. If there is no purchase for a long period of time, I may remove the listing without notice, please forgive me. Followers will receive a flat 3% discount on their first purchase. Repeat customers will receive a flat 5% discount from their second purchase onwards. Please let me know in the comments, and I will make the changes. I am selling various items, mainly watches, to organize my collection. I would be happy if you would take a look at my other items as well. ↓↓↓↓↓ #PopotaWatchMen