![Classic Casio F-91 Wristwatch with Some Simple Upgrades | #WearableWednesday « Adafruit Industries – Makers, hackers, artists, designers and engineers! Classic Casio F-91 Wristwatch with Some Simple Upgrades | #WearableWednesday « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2017/04/casio-f91.png)
Classic Casio F-91 Wristwatch with Some Simple Upgrades | #WearableWednesday « Adafruit Industries – Makers, hackers, artists, designers and engineers!
![keesplattel on Twitter: "New tiny tiny hobby: Modding Casio F-91W watch faces and giving them custom LED colors, polarized LCD, NFC chips and SD card holders. Want one? Let me know what keesplattel on Twitter: "New tiny tiny hobby: Modding Casio F-91W watch faces and giving them custom LED colors, polarized LCD, NFC chips and SD card holders. Want one? Let me know what](https://pbs.twimg.com/media/DP4B1qBWsAAO7BT.jpg)
keesplattel on Twitter: "New tiny tiny hobby: Modding Casio F-91W watch faces and giving them custom LED colors, polarized LCD, NFC chips and SD card holders. Want one? Let me know what
![Casio Europe GmbH of Norderstedt at EuroShop 2020 in Düsseldorf -- EuroShop - World´s No. 1 Retail Trade Fair - Next event: Feb 26-Mar 02 2023, Düsseldorf, Germany Casio Europe GmbH of Norderstedt at EuroShop 2020 in Düsseldorf -- EuroShop - World´s No. 1 Retail Trade Fair - Next event: Feb 26-Mar 02 2023, Düsseldorf, Germany](https://www.euroshop.de/vis-content/event-euroshop2020/exh-euroshop2020.2628284/EuroShop-2020-CASIO-Europe-GmbH-Product-euroshop2020.2628284-DpVRhdCATf6b9mMzpHivug-image.png)