Touchscreen Casio Calculator Watch
Before smartwatches, there was the gesture-controlled, touchscreen Casio AT-552 Janus. That’s right, the AT Janus models (AT-551 and AT-552) included an eight-digit touchscreen calculator where the entire display could be used to ‘write’ the number or calculator function. The watch would recognize what had been written by the user’s fingertip and perform the calculation.



One caveat: they sometimes break. It’s typically the analog portion that stops working, and these are a disaster to disassemble. It’s not recommended that one disassemble one unless you know exactly what you’re doing. If that isn’t an issue, you can transplant pieces between similar AT models with great success and, theoretically, the analog piece can be replaced with one of the more generic analog/digital Casio units, which are far cheaper.

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Garmin Venu - GPS Smartwatch with Bright Touchscreen Display - Music, Body Energy Monitoring, Animated...
  • Stunning AMOLED Display: Enjoy a beautiful and bright AMOLED touchscreen display that brings your watch to life. The vibrant colors and sharp...
  • Long Battery Life: Stay powered up with up to five days of battery life in smartwatch mode. For longer activities, such as GPS tracking and music...
  • Comprehensive Health Monitoring: Keep track of your overall well-being with the broadest range of all-day health monitoring features. Monitor your...

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