The legendary Casio F-91W digital watch, unchanged since its 1989 debut, is finally receiving modern smart features - though surprisingly not from Casio itself. Enter the Ollee Watch One: an innovative replacement motherboard compatible with Casio's F-91W, A158W, and several other classic models. This plug-and-play upgrade requires no soldering skills - just basic screwdriver proficiency to access the watch's internals. While it won't transform your retro timepiece into an Apple Watch rival, it adds Bluetooth connectivity, automatic time synchronization, step tracking, retro gaming capabilities, and customizable colored backlighting.
The do-it-yourself upgrade kit, priced at $54.99, fits six popular Casio models including the F-84W, A159W, A171W, and W-59. Installation reportedly takes just six minutes according to the manufacturer. For those preferring a turnkey solution, Ollee offers pre-modified F-91W-1 and A158W-1 watches at $99.99, though current stock remains unavailable.
This smart enhancement brings several notable improvements:
Customizable multicolor LED illumination doubling as flashlight
World time functionality
Programmable timer presets
*The Ollee Watch One upgrade includes a simple ball-bouncing game called* Ping.Image: Ollee
The upgrade maintains the F-91W's classic segmented LCD display - no notification support or screen enhancements here. However, owners can enjoy retro-style entertainment including a Blackjack variant and the paddle game Ping. Battery performance understandably decreases from Casio's seven-year claim to approximately ten months using Bluetooth Low Energy technology with a standard CR2016 battery.
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