This is the Casio CA-53W calculator watch. As the current version of the model worn by Marty McFly in the movie "Back to the Future," it's a globally beloved classic gadget watch. It's excellent as a minimalist style or retro fashion accent, but I'm selling it to organize my belongings. 【Condition】 ・Purchase Date: 2025 ・Frequency of Use: About once a week ・Operational Status: Both the watch and calculator functions are working correctly. ・Appearance: There are no noticeable scratches on the LCD screen or the band / There are minor scuffs from use, but it's in overall good condition. ※Please note that this model does not have a light function. ※Casio's published battery life is about 5 years, but please consider this as a guideline, as there may be some consumption from the factory. 【Recommended Points】 ・It's very lightweight and has a slim silhouette that doesn't get in the way of your cuffs. ・Because it's monotone (black), it goes well with basic clothing such as white, gray, and navy. 【Shipping Method】 It will be carefully packaged and shipped via anonymous delivery using [Yu-Packet Post/Nekopos]. Please purchase only if you understand that this is a used item. Instant purchase is OK. Thank you.