![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!
![NODE Brings Us His Latest Twist on the Classic Casio F91W, a True Timepiece for the Changing Times! - Hackster.io NODE Brings Us His Latest Twist on the Classic Casio F91W, a True Timepiece for the Changing Times! - Hackster.io](https://hackster.imgix.net/uploads/attachments/1161609/vlcsnap-2020-07-18-19h58m27s990_kCXvqRJbgL.png?auto=compress%2Cformat)
NODE Brings Us His Latest Twist on the Classic Casio F91W, a True Timepiece for the Changing Times! - Hackster.io
![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
![Handling the nfc reader/writer, Rfid tags, Contactless ic cards | Casio IT-9000 User Manual | Page 45 / 86 Handling the nfc reader/writer, Rfid tags, Contactless ic cards | Casio IT-9000 User Manual | Page 45 / 86](https://www.manualsdir.com/manuals/65909/45/casio-it-9000-page45.png)