I built a voice AI wearable inside a Casio F91W (nRF52840 and Whisper and BLE) (cobalt-watch.com)

A new voice AI wearable has been launched inside a vintage Casio F91W watch, transforming the classic timepiece with modern technology. This innovative device utilizes a custom PCB featuring an nRF52840 microcontroller, MEMS microphone, accelerometer, and RGB LED, all fitting seamlessly within the vintage casing. With an impressive battery life of up to three months in standby and 12 hours of active use, the watch is both discreet and functional. Its Bluetooth Low Energy 5.0 compatibility ensures easy synchronization with other devices, allowing users to capture ideas, record conversations, or ask questions hands-free. The significance of this development lies in its blending of retro aesthetics with cutting-edge voice AI technology, targeting makers and early adopters who value functionality without compromising style. Users can interact with the integrated Cobalt assistant through a single button, organizing voice commands and notes chronologically within a user-friendly Android app. The introduction of additional features, such as NFC capabilities for contactless payment and additional smart functions, highlights the ongoing trend of integrating advanced technologies into everyday items. This fusion of old and new not only appeals to nostalgia but also demonstrates the potential for wearable tech to enhance daily tasks in a sleek, unobtrusive manner.