Casio F-B100W-1A
Casio’s new F‑B100W‑1A revives the classic F‑91W digital watch aesthetic while adding a step counter and Bluetooth syncing, all on a claimed two-year CR2016 coin-cell battery. Commenters are intrigued by the blend of retro design and minimalist “smart” features, contrasting it with daily‑charged Apple Watches and Fitbits, and debating whether step tracking and phone sync justify the added complexity. Concerns center on privacy and lock‑in via Casio’s proprietary app and required online account, as well as a broader tension between desire for durable, low‑maintenance watches and the march toward ever more connected wearables.
Battery life, hardware, and sensors
- Advertised ~2‑year life on a CR2016 coin cell is widely discussed and seen as impressive given Bluetooth and step counting.
- Posters with similar Casio models report multi‑year real‑world life, noting BLE is user‑initiated and active only briefly.
- Engineers explain it’s plausible: ultra‑low‑power accelerometers can track steps at a few microamps, with the main MCU mostly asleep.
- Some skepticism remains, especially if step counter and backlight are used heavily; comparisons made to AirTags, generic pedometers, and smartwatches.
Step counting and health usefulness
- Many like simple step tracking as a daily activity nudge, especially when they don’t always carry phones (or dislike phones).
- Others dismiss step counts as shallow “health theater” vs deliberate exercise, and question how much missing incidental steps matters.
- Recognition that phones work well as pedometers for people who keep them on-body; watches or bands suit those who don’t.
Bluetooth, apps, and privacy
- Major criticism: Bluetooth requires Casio’s proprietary app, which in turn demands a Casio account and extensive permissions (incl. location on Android).
- Several see this as unnecessary data collection and contrary to the appeal of a simple, durable watch.
- Some point to open‑source projects (Gadgetbridge, gshock_api, Casio G‑Shock Smart Sync) as precedent and expect eventual reverse‑engineering, but encryption could complicate this.
Design, ergonomics, and features
- Slightly larger than the original F‑91W, welcomed by those who found the classic too small.
- Opinions split on text‑heavy bezel (“Step Tracker”, “Water Resist”) and small time display; some want cleaner faces or mod the crystal/graphics.
- Backlight quality is debated; related models reportedly have better LED illumination than the classic F‑91W side‑glow.
- Lack of vibration alarm and notifications disappoints some who want a “minimal smartwatch”; others are explicitly glad it avoids such distractions.
Simplicity vs “smart” direction
- Strong nostalgia for the F‑91W’s dead‑simple, phone‑free operation and very long battery life.
- Some feel adding Bluetooth and app dependence breaks that spirit; others like “dumb watch, smart phone backend” with rare syncing.
Alternatives and mods
- Comparisons to Amazfit Neo/Bip, Fitbit, Garmin, Pebble, and smart rings: more sensors and notifications but much worse battery life.
- Enthusiasts highlight mod boards like Sensor Watch and Ollee that add richer features to F‑91W cases while remaining hackable and offline.