NewXiaomi Watch S5 41mm added to the catalogSee specs →Advertise
idk.devsmartwatches & bands, compared
  1. idk.dev
  2. Spec guide
  3. Case size
Design & durability

Case size: typical values for smartwatches

Half of smartwatches in the catalog have case size below 46 mm, and 80% fall between 41 mm and 51 mm (650 models with data).

Median46 mm
Median 202646 mm
Typical range41 mm – 51 mm
Models650
Distribution

How case size is distributed

05410816121534384246505234–36: 2236–38: 1138–40: 1040–42: 4042–44: 10844–46: 10046–48: 21548–50: 5950–52: 6052–54: 25Median 46 mm
Percentile10 %25 %50 %75 %90 %
Case size41 mm43 mm46 mm47 mm51 mm

A model at the 75th percentile beats three quarters of the catalog on this spec.

Trends

Median case size by year

0 mm13 mm25 mm38 mm50 mm20192020202120222023202420252026
Recent leaders

Highest case size

1 Cubot GT3
Cubot · 2025
GT3
1.96″5 ATM57 g
59 mm
6.5
2 Cubot C28
Cubot · 2024
C28
2.02″1 ATM44.5 g
58 mm
4.2
3 Oukitel BT101
Oukitel · 2024
BT101
2.02″7 days1 ATM
58 mm
4.6
4 Cubot X3
Cubot · 2025
X3
1.73″5 ATM94.6 g
54 mm
5.4
5 Cubot X5
Cubot · 2026
X5
2.13″3 ATM84 g
54 mm
4.9
6 Cubot GT1
Cubot · 2024
GT1
1.43″5 ATM92 g
54 mm
5.3
7 Realme TechLife Watch R100
Realme · 2022
TechLife Watch R100
1.32″46 g
54 mm
4.3
8 Cubot C20 Pro
Cubot · 2023
C20 Pro
1.81″
54 mm
4.4
9 Asus VivoWatch 5 HC-B05
Asus · 2023
VivoWatch 5 HC-B05
10 days5 ATM74 g
54 mm
5.6
10 Oukitel BT80
Oukitel · 2024
BT80
2.13″2 ATM
53 mm
5.4
To compare: 0up to 4 models
Compare