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Thinnest smartwatches

Top 30 models by thickness, from our catalog.

updated Nov 11, 2026models from 2023 on
Knauermann Lite 4 2026
#1

Knauermann Lite 4 2026

6 mm
1.85″5 days
See specs
2 Xcoast Siona 2 Nano
Xcoast · 2025
Siona 2 Nano
1.3″6 days
6.9 mm
7.0
3 Xcoast Siona 2
Xcoast · 2024
Siona 2
1.3″2 days
6.9 mm
7.0
4 Reflex RA08-2118 Series 8 Activity Tracker
Reflex · 2025
RA08-2118 Series 8 Activity Tracker
1″
7 mm
5 Daewoo CNX+ AMOLED Smartwatch
Daewoo · 2025
CNX+ AMOLED Smartwatch
9 days
7 mm
6.7
6 Garmin Venu X1
Garmin · 2025
Venu X1
2″8 days5 ATM34 g
7.9 mm
7.0
7 Radley RYS08
Radley · 2025
RYS08
1″
8 mm
8 Radley RYS08-2088
Radley · 2025
RYS08-2088
8 mm
9 Samsung Galaxy Watch8
Samsung · 2025
Galaxy Watch8
1.47″1.2 days5 ATM34 g
8.6 mm
6.6
10 Samsung Galaxy Watch9
Samsung · 2026
Galaxy Watch9
1.47″5 ATM34 g
8.6 mm
9.0
11 Zeblaze GTS 4
Zeblaze · 2026
GTS 4
1.94″7 days
8.7 mm
9.3
12 OPPO Watch S
OPPO · 2025
Watch S
1.46″7 days5 ATM35 g
8.9 mm
7.4
13 OnePlus Watch Lite
OnePlus · 2025
Watch Lite
1.46″7 days5 ATM35 g
8.9 mm
7.2
14 Samsung Galaxy Watch6
Samsung · 2023
Galaxy Watch6
1.5″5 ATM33.3 g
9 mm
8.8
15 Amazfit Active 2 (Square)
Amazfit · 2025
Active 2 (Square)
1.75″10 days5 ATM31.4 g
9 mm
8.9
16 Peaq PSW 200
Peaq · 2026
PSW 200
1.32″12 days
9 mm
8.0
17 Amazfit GTR Mini
Amazfit · 2023
GTR Mini
1.28″14 days5 ATM36.2 g
9.2 mm
9.4
18 Xiaomi Watch S4 41mm
Xiaomi · 2025
Watch S4 41mm
1.32″5 ATM32 g
9.5 mm
7.8
19 Polar Ignite 3 Titanium
Polar · 2023
Ignite 3 Titanium
1.28″8 days3 ATM36 g
9.5 mm
5.3
20 Samsung Galaxy Watch7
Samsung · 2024
Galaxy Watch7
1.5″5 ATM33.8 g
9.7 mm
8.6
21 Apple Watch Series 10
Apple · 2024
Watch Series 10
1.96″0.8 days5 ATM34.4 g
9.7 mm
6.1
22 Apple Watch Series 11
Apple · 2025
Watch Series 11
1.96″0.8 days5 ATM34.6 g
9.7 mm
6.0
23 Apple Watch Series 10 Aluminum
Apple · 2024
Watch Series 10 Aluminum
1.96″5 ATM29.3 g
9.7 mm
9.4
24 Apple Watch Series 11 Aluminum
Apple · 2025
Watch Series 11 Aluminum
1.96″5 ATM29.7 g
9.7 mm
9.3
25 Apple Watch Series 12
Apple · 2026
Watch Series 12
1.96″1 days5 ATM52.9 g
9.7 mm
6.1
26 Apple Watch Series 12 Aluminum
Apple · 2026
Watch Series 12 Aluminum
1.96″5 ATM39.5 g
9.7 mm
9.1
27 Samsung Galaxy Watch FE
Samsung · 2024
Galaxy Watch FE
1.2″5 ATM26.6 g
9.8 mm
8.2
28 Mibro C4
Mibro · 2024
C4
2.01″10 days2 ATM45 g
9.8 mm
4.3
29 Xiaomi Redmi Watch 6
Xiaomi · 2025
Redmi Watch 6
2.1″24 days5 ATM31 g
9.9 mm
8.4
30 Knauermann Pro 4
Knauermann · 2025
Pro 4
1.56″5 days
9.9 mm
8.7

Close contests in this ranking

Knauermann Lite 4 2026vsXcoast Siona 2 NanoKnauermann Lite 4 2026vsXcoast Siona 2 Nano9.07.0Xcoast Siona 2 NanovsXcoast Siona 2Xcoast Siona 2 NanovsXcoast Siona 27.07.0Xcoast Siona 2vsReflex RA08-2118 Series 8 Activity TrackerXcoast Siona 2vsReflex RA08-2118 Series 8 Activity TrackerReflex RA08-2118 Series 8 Activity TrackervsDaewoo CNX+ AMOLED SmartwatchReflex RA08-2118 Series 8 Activity TrackervsDaewoo CNX+ AMOLED SmartwatchDaewoo CNX+ AMOLED SmartwatchvsGarmin Venu X1Daewoo CNX+ AMOLED SmartwatchvsGarmin Venu X16.77.0Garmin Venu X1vsRadley RYS08Garmin Venu X1vsRadley RYS08

Other rankings

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