Apple Watch Ultra 3 vs Mibro GS Explorer S
Apple Watch Ultra 3 and Mibro GS Explorer S are watches both released in 2025 by different brands, with overlapping phone compatibility. This comparison separates the catalog's listed specifications from missing information and approximate values. It covers 18 fields, including 9 exact differences; it does not choose a winner.
Specifications side by side
| Field | Apple Watch Ultra 3 | Mibro GS Explorer S |
|---|---|---|
| Release year | 2025 | 2025 (approx.) |
| Case sizes | 49 mm | 46 mm (approx.) |
| Display | Wide-angle LTPO3 OLED, Always-On | 1.32-inch AMOLED 466x466 |
| Brightness | 3000 nits | 1500 nits |
| Battery, as listed | Up to 42 hours · 72 hours saver | Up to 20 days daily · 25 GPS hours |
| Operating system | watchOS 26 (upgradable to 27) | Mibro OS |
| Phone compatibility | iPhone | Android, iPhone |
| Cellular connection | eSIM · 5G | None |
| Water rating | 10ATM · EN13319 (diving) | 10ATM |
| Glass | Sapphire | Not listed |
| Case material | Titanium (natural/black) | Not listed |
| GPS | Dual-frequency GNSS | Dual-frequency GNSS |
| Maps | Yes | Yes |
| Payment system | Apple Pay | None listed |
| Plan requirement | Not required | Not required |
| Listed sensors and features | Sleep apnea, ECG, HRV, Readiness score, SpO2, Skin temperature | Heart rate, SpO2 |
| Safety features | Crash detection, depth, Fall detection, Satellite SOS, siren, SOS calling | None listed |
| Hardware flashlight | No | No |
"Not listed" means the catalog has no usable value for that field. It does not mean the watch lacks the feature. Approximate values stay visible but do not support the difference count or numeric deltas.
Where they differ
- Display: Apple Watch Ultra 3 lists Wide-angle LTPO3 OLED, Always-On; Mibro GS Explorer S lists 1.32-inch AMOLED 466x466.
- Brightness: Apple Watch Ultra 3 lists 3000 nits; Mibro GS Explorer S lists 1500 nits. The listed values are 1500 nits apart.
- Battery, as listed: Apple Watch Ultra 3 lists Up to 42 hours · 72 hours saver; Mibro GS Explorer S lists Up to 20 days daily · 25 GPS hours. These are the full listed battery descriptions. Different modes or case variants prevent a single numeric battery-life delta.
- Operating system: Apple Watch Ultra 3 lists watchOS 26 (upgradable to 27); Mibro GS Explorer S lists Mibro OS. The listed software descriptions are not a guarantee of the software version currently installed on an individual watch.
- Phone compatibility: Apple Watch Ultra 3 lists iPhone; Mibro GS Explorer S lists Android, iPhone.
- Cellular connection: Apple Watch Ultra 3 lists eSIM · 5G; Mibro GS Explorer S lists None. Variant wording is retained. A cellular specification alone does not confirm activation with your mobile carrier.
- Payment system: Apple Watch Ultra 3 lists Apple Pay; Mibro GS Explorer S lists None listed.
- Listed sensors and features: Apple Watch Ultra 3 lists Sleep apnea, ECG, HRV, Readiness score, SpO2, Skin temperature; Mibro GS Explorer S lists Heart rate, SpO2. This compares the listed feature names, not measurement accuracy, clinical usefulness or availability in a particular country.
- Safety features: Apple Watch Ultra 3 lists Crash detection, depth, Fall detection, Satellite SOS, siren, SOS calling; Mibro GS Explorer S lists None listed.
Where they are the same
- Both list gps: Dual-frequency GNSS.
- Both list maps: Yes.
- Both list plan requirement: Not required.
- Both list hardware flashlight: No.
Which one fits you
Apple Watch Ultra 3 is listed as a watch compatible with iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.
Mibro GS Explorer S is listed as a watch compatible with Android, iPhone. Start with that phone requirement before comparing the other rows. The exact differences above are a way to identify which listed specifications matter to your use, not evidence that one model is better in every respect.
Information is missing on at least one side for: Glass, Case material. Those rows are excluded from the exact difference count.
Related pages
- Apple Watch Ultra 3 specifications
- Apple watches
- Mibro GS Explorer S specifications
- Mibro watches
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