[ watch ]
S100 Ultra — Obsidian Black
AMOLED circular display. Medical-grade ECG. 7 straps in the box.
The flagship. A 1.43-inch AMOLED circular screen with 1000-nit peak brightness, single-lead ECG monitoring, heart-rate and SpO2 tracking, 5ATM water resistance and a 14-day battery. Ships with 7 interchangeable straps and a protective case.
Specifications
- Display
- 1.43" AMOLED, 466×466, 1000 nits
- Health
- ECG, HR, SpO2, sleep
- Battery
- 14 days typical
- Water
- 5ATM
- In the box
- Watch, 7 straps, protective case, magnetic charger
[ Strap Studio ]
One watch. Seven moods.
Every S100 Ultra ships with all 7 straps. Tap one — the watch changes its mind instantly.
S100 Ultra
18:39
52s · ECG OK
Midnight Sport — Fluoroelastomer
All 7 in the box — no strap shopping required.
Reviews
Field reports
E2E check
Automated verification review.
Review Bot — Verified buyer
The ECG sold me
Ran an ECG next to my cardiologist's machine — readings matched. Seven straps means I never wear the same watch twice in a week.
Marcus T. — Verified buyer
AMOLED is unreal
Readable in direct sunlight, and the battery genuinely lasts two weeks. The protective case saved it from a gym-floor drop already.
Elena R. — Verified buyer
Flagship feel, half the price
Build quality punches way above $129. Wish the charger cable was longer, but otherwise flawless.
Dev P. — Verified buyer
Write a review
Sign in to share your field report.
Sign in