Devices
Device specifications
Each entry is sourced and dated, with no estimated or invented figures. This is a small, growing catalogue, not a full database yet. Compare any two devices.
Comparisons for these devices
All comparisons
Apple · SmartwatchApple Watch SE 3Released
- Case size
- 40mm case: 40 x 34 x 10.7mm; 44mm case: 44 x 38 x 10.7mm
- Water resistance
- 50m (swimproof)
- OS
- watchOS
Verified1 comparison
Apple · SmartwatchApple Watch Series 12Released · 2026-09-18
- Case size
- 42mm case (aluminum/titanium): 42 x 37 x 9.7mm; 46mm case (aluminum/titanium): 46 x 40 x 9.7mm; ceramic case: 47 x 41 x 9.85mm
- Water resistance
- 50m (ISO 22810:2010), IP6X dust resistance
- OS
- watchOS
Verified3 comparisons
Apple · SmartwatchApple Watch Ultra 3Released · 2025-09-19
- Case size
- 49mm: Height 49mm, Width 44mm, Depth 12mm
- Water resistance
- 100m water resistance (ISO 22810:2010); recreational scuba diving to 40m; IP6X dust resistance; MIL-STD-810H tested
- OS
- watchOS
Verified2 comparisons
Apple · SmartwatchApple Watch Ultra 4Released · 2026-09-19
- Case size
- 49mm height x 44mm width x 12mm depth; fits 130-210mm wrists
- Water resistance
- 100m water resistance (ISO standard 22810:2010), IP6X dust resistance (IEC 60529), EN13319 recreational scuba diving to 40m, tested to MIL-STD-810H
- OS
- watchOS 27
Verified4 comparisons
Amazfit · SmartwatchBalance 2Released · 2025-06-01
- Case size
- 47.4 x 47.4 x 12.3 mm
- Battery
- 658 mAh
- Water resistance
- 10 ATM
Verified1 comparison
Garmin · SmartwatchFenix 9Released · 2026-08-28
- Case size
- Available in 43mm, 47mm, and 51mm case sizes
- Water resistance
- Dive-rated to 40 meters
- OS
- Garmin OS
Verified1 comparison
Samsung · SmartwatchGalaxy Watch UltraReleased · 2025-07-25
- Case size
- 47mm case
- Battery
- 590 mAh
- Water resistance
- 10 ATM + IP68, MIL-STD-810H tested
Verified1 comparison
Samsung · SmartwatchGalaxy Watch Ultra2Released · 2026-08-07
- Case size
- 47.4 x 47.1 x 10.7 mm (47mm)
- Battery
- 800 mAh
- Water resistance
- 10ATM+, IP69K, MIL-STD-810H, EN13319
Verified1 comparison
Samsung · SmartwatchGalaxy Watch8Released · 2025-07-25
- Case size
- 44mm: 46.0 × 43.7 × 8.6 mm
- Battery
- 435 mAh
- Water resistance
- 5 ATM
Verified4 comparisons
No product photo available
Samsung · SmartwatchGalaxy Watch8 ClassicReleased · 2025-07-25
- Case size
- 46.4 x 46 x 10.6 mm (46mm)
- Battery
- 445 mAh
- Water resistance
- 5ATM + IP68, MIL-STD-810H
Verified1 comparison
Samsung · SmartwatchGalaxy Watch9 (44mm)Released · 2026-07-25
- Battery
- 445 mAh
- Water resistance
- 5 ATM + IP68, MIL-STD-810H tested
- OS
- Wear OS (by Google)
Verified1 comparison
OnePlus · SmartwatchOnePlus Watch 3Released
- Case size
- 46.6mm (excluding lugs) × 47.6mm × 11.75mm (excluding sensor area)
- Water resistance
- IP68, 5ATM; MIL-STD-810H tested
- OS
- Wear OS by Google + RTOS (dual-system architecture)
Verified3 comparisons
Google · SmartwatchPixel Watch 4Released · 2025-10-09
- Case size
- 45mm: 45 × 45 × 12.3 mm
- Battery
- 41mm: 325 mAh (typical), 45mm: 455 mAh (typical) mAh
- Water resistance
- 5 ATM, IP68
Verified3 comparisons
Google · SmartwatchPixel Watch 5Released · 2026-08-01
- Case size
- 41mm or 45mm case; 12.3mm height (45mm model)
- Battery
- 332 (41mm), 465 (45mm) mAh
- Water resistance
- 5 ATM plus IP68 dust and water resistance
Verified1 comparison
Xiaomi · SmartwatchXiaomi Watch S4Released · 2025-02-01
- Case size
- 47.3mm x 47.3mm x 12.0mm
- Battery
- 486 mAh
- Water resistance
- 5ATM
Verified2 comparisons