Who is the Apple - Watch SE 3 for?
Entry-tier smartwatche. Below 58 on the Mars Score means several weighted specs trail the category leaders by a wide margin.
Only consider this if there is a specific reason — price, brand loyalty, ecosystem fit. The best-of page shows what your money buys a tier up.
Mars Score is computed from 17 measured specs against the transparent formula for the smartwatches category. No editorial picks, no paid placement.
Apple - Watch SE 3: advantages & disadvantages
Measured against every smartwatches we track, here is where the Apple - Watch SE 3 pulls ahead — and where it gives ground.
- ▲Includes GPS — a feature not every smartwatches offers.
- ▲Includes Cellular — a feature not every smartwatches offers.
- ▼No Always-on display — a feature most stronger smartwatches include.
- ▼No ECG — a feature most stronger smartwatches include.
- ▼No SpO2 — a feature most stronger smartwatches include.
- ▼Battery life: 18 h — among the weakest in the smartwatches category.
Pros are specs scoring ≥75% of the category normalization range. Cons are ≤35%. Derived from the Mars Score formula — no hand-curated lists.
At a glance
- Display size
- 1.78"
- Case size
- 44mm
- Battery life
- 18h
- OS
- watchOS
All specifications
Design
- Case size
- 44 mm
- Weight
- 33 g
- Case material
- aluminum
- Water resistance?
- 5 ATM
Display
- Display size
- 1.78 "
- Always-on display
- false
- Peak brightness?
- 1000 nits
Health & Fitness
- ECG
- false
- SpO2
- false
- Temperature sensor
- false
- Sleep tracking
- true
- Blood pressure
- false
Battery & Connectivity
- Battery life
- 18 h
- GPS
- true
- Cellular
- true
- NFC
- true
- OS
- watchOS
Latest from the lab
All lab reports →Popular comparisons featuring the Apple - Watch SE 3
The 8 closest matchups in the Smartwatches category, sorted by Mars Score proximity — the fights most worth your time.
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Frequently asked
What is the Mars Score for Apple - Watch SE 3?+
Apple - Watch SE 3 scores 56.1 on the transparent Mars Score formula for smartwatches, computed from its published specs against the category's weighted normalization.
What category does Apple - Watch SE 3 belong to?+
Apple - Watch SE 3 is a Apple smartwatche catalogued in the Smartwatches category.
When was Apple - Watch SE 3 released?+
Apple - Watch SE 3 was released on 2025-09-19.
What is the display size of Apple - Watch SE 3?+
Apple - Watch SE 3 has a display size of 1.78 ".
What is the case size of Apple - Watch SE 3?+
Apple - Watch SE 3 has a case size of 44 mm.
What is the battery life of Apple - Watch SE 3?+
Apple - Watch SE 3 has a battery life of 18 h.
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