What Is the Ollee Watch One?
The Ollee Watch One is a replacement mainboard designed for a handful of classic Casio digital watches, including the F‑91W, A158W and several other models. It can be installed without soldering, requiring only the removal of a few screws and clips. The upgrade transforms these retro timepieces by adding Bluetooth low‑energy connectivity and an accompanying iOS and Android app.
Features and Capabilities
Once installed, the watch gains an accelerometer for step counting, a temperature sensor, and an upgraded audio buzzer that can alert the wearer when a preset goal is reached. The backlight is enhanced to allow color changes and can double as a flashlight. Additional functions include world‑time display, five timer presets, and the ability to set the time automatically via the mobile app.
Although the segmented screen remains unchanged, the Ollee Watch One adds simple games such as a version of Blackjack and a paddle‑ball game called Ping. Users can also choose from alternate watch faces, though the display does not become comparable to modern smartwatches.
Installation and Pricing
The DIY version of the upgrade kit is sold for $54.99 and is intended for owners who already have a compatible Casio model. For those who prefer a ready‑to‑wear solution, Ollee offers pre‑installed watches—specifically the Casio F‑91W‑1 and A158W‑1—priced at $99.99, though these stocked units have been reported as sold out.
Installation takes roughly six minutes and does not require any electronics expertise beyond basic screw removal. The process does not involve soldering, making it accessible to hobbyists and casual users alike.
Battery Life and Limitations
The original Casio watches claim up to seven years of battery life on a CR2016 cell. After the Ollee upgrade, battery life is reduced to about ten months, still respectable given the added Bluetooth functionality. There are no notification features, and the watch does not support full‑screen smart displays. Nevertheless, the upgrade offers a significant functional expansion while preserving the classic look of the original Casio digital watches.
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