Samsung Galaxy Watch7 - LTE · 40mm vs Samsung Galaxy Watch8 LTE ClassicSize, Specs & Wrist Fit Compared
The Samsung Galaxy Watch8 LTE Classic is 6mm wider, 6mm longer, 0.9mm thicker and 29.7g heavier than the Samsung Galaxy Watch7 - LTE · 40mm. Both are circular.
Measured against the Samsung Galaxy Watch7 - LTE · 40mm.
- Case width
- 40.4mmbaseGalaxy Watch7 - LTE · 40mm46.4mm+6mmGalaxy Watch8 LTE Classic
- Lug-to-lug
- 40.4mmbaseGalaxy Watch7 - LTE · 40mm46.4mm+6mmGalaxy Watch8 LTE Classic
- Thickness
- 9.7mmbaseGalaxy Watch7 - LTE · 40mm10.6mm+0.9mmGalaxy Watch8 LTE Classic
- Weight
- 33.8gbaseGalaxy Watch7 - LTE · 40mm63.5g+29.7gGalaxy Watch8 LTE Classic
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Samsung
Galaxy Watch7 - LTE · 40mm
Samsung
Galaxy Watch8 LTE Classic
Which one fits you
On wrists narrower than about 49mm, the Samsung Galaxy Watch7 - LTE · 40mm is the safer pick — it stays proportionate down to roughly 43mm, where the Samsung Galaxy Watch8 LTE Classic starts to hang over the edge. Above 49mm both sit cleanly, and the Samsung Galaxy Watch8 LTE Classic gives you more presence.
The Samsung Galaxy Watch8 LTE Classic wears larger than the Samsung Galaxy Watch7 - LTE · 40mm (46.4mm vs 40.4mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Samsung Galaxy Watch7 - LTE · 40mm is the slimmer of the two (9.7mm vs 10.6mm), so it slides under a cuff more easily.
On the wrist the Samsung Galaxy Watch7 - LTE · 40mm feels lighter (33.8g vs 63.5g, case only).
Among the 509 40mm watches we hold thickness for, the Samsung Galaxy Watch7 - LTE · 40mm is thinner than 67%, so it wears flatter than its width suggests.
Among the 158 46mm watches we hold thickness for, the Samsung Galaxy Watch8 LTE Classic is thinner than 97%, so it wears flatter than its width suggests.
Specification Comparison
| Spec | SamsungGalaxy Watch7 - LTE · 40mm | SamsungGalaxy Watch8 LTE Classic |
|---|---|---|
| Case Width | 40.4mm | 46.4mm |
| Thickness | 9.7mm | 10.6mm |
| Weight | 33.8g | 63.5g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.3 inches | 1.34 inches |
| Always-On Display | Yes | Yes |
| Battery life | 1.6 days | 2 days |
| Battery power | 300 mAh | 445 mAh |
| Has wireless charging | Yes | Yes |
| Has a removable battery | No | No |
| Has a solar power battery | No | No |
| Has a rechargeable battery | Yes | Yes |
| Has a battery level indicator | Yes | Yes |
| Released | 2024 | 2025 |
Hover a row to highlight that measurement in the schematics below.
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist. Built from the measurements, so it works for every watch whether or not it has a photo.
- Samsung Galaxy Watch7 - LTE · 40mm40.4mm · 9.7mm thick
- Samsung Galaxy Watch8 LTE Classic46.4mm · 10.6mm thick
Samsung Galaxy Watch7 - LTE · 40mm vs Samsung Galaxy Watch8 LTE Classic on a wrist
Put Samsung Galaxy Watch7 - LTE · 40mm and Samsung Galaxy Watch8 LTE Classic on the same arm, sized to your own wrist, and turn it. Side by side or stacked on one spot, whichever answers the question faster.
- Samsung Galaxy Watch7 - LTE · 40mm — 40.4mm case, standing 9.7mm off the wrist.
- Samsung Galaxy Watch8 LTE Classic — 46.4mm case, standing 10.6mm off the wrist.
Whether that clears your wrist edges is the question worth answering, and it depends on your wrist rather than on the case diameter.
See them on a wrist in 3DCase shapes are generated from each watch's published measurements — case width, lug-to-lug and thickness — not from manufacturer 3D models, so the proportions are accurate while the dial is generic.
Battery life compared
Furthest apart in Smartwatch mode, where the Samsung Galaxy Watch8 LTE Classic lasts 1.2× as long as the Samsung Galaxy Watch7 - LTE · 40mm (2 days against 38.4 hours).
Samsung Galaxy Watch7 - LTE · 40mmSamsung Galaxy Watch8 LTE Classic
Smartwatch
1.6 days2 days
Full Specification Comparison
112 specs| Spec | Samsung Galaxy Watch7 - LTE · 40mm | Samsung Galaxy Watch8 LTE Classic |
|---|---|---|
| Design | ||
| width | 40.4 | 46.4 |
| height | 40.4 | 46.4 |
| volume | 15.83 cm³ | 22.82 cm³ |
| weight | 33.8 g | 63.5 g |
| thickness | 9.7 | 10.6 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 432 x 432 px | 438 x 438 px |
| screen size | 1.3 inches | 1.34 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 327 ppi | 327 ppi |
| width of band | 20 mm | 20 mm |
| water resistance | Water resistant | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 50 m | 50 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | Yes |
| maximum operating temperature | 35 °C | 35 °C |
| Ingress Protection (IP) rating | IP68 | IP68 |
| has branded damage-resistant glass | No | No |
| lowest potential operating temperature | 0 °C | 0 °C |
| Battery | ||
| battery life | 1.6 days | 2 days |
| battery power | 300 mAh | 445 mAh |
| has wireless charging | Yes | Yes |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | Yes | Yes |
| has a gyroscope | Yes | Yes |
| Has a cadence sensor | No | No |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| RAM | 2GB | 2GB |
| release date | 2024-07-10 | 2025-07-09 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| internal storage | 32GB | 64GB |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | Yes | Yes |
| Locates your phone | Yes | Yes |
| has fall detection | Yes | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| shows readiness level | Yes | Yes |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| Connectivity | ||
| has NFC | Yes | Yes |
| SIM cards | 1 eSIM | 1 eSIM |
| Wi-Fi version | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) |
| supports ANT+ | No | No |
| supports Wi-Fi | Yes | Yes |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| has a cellular module | Yes | Yes |
| Is compatible with iOS | No | No |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| Compatible with smart scales | Yes | Yes |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Has coaching | Yes | Yes |
| Includes maps | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | Yes |
| Provides activity reports | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | No | No |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | No | No |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Samsung Galaxy Watch7 - LTE · 40mm
Sits best on wrists ~43–58mm wide (≈ 11.5–15.5cm circumference).
Samsung Galaxy Watch8 LTE Classic
Sits best on wrists ~49–66mm wide (≈ 13.1–17.6cm circumference).
Frequently Asked Questions
Is the Samsung Galaxy Watch7 - LTE · 40mm bigger than the Samsung Galaxy Watch8 LTE Classic?
The Samsung Galaxy Watch8 LTE Classic is bigger — 46.4mm vs 40.4mm case width.
Which fits a smaller wrist better, the Samsung Galaxy Watch7 - LTE · 40mm or the Samsung Galaxy Watch8 LTE Classic?
The Samsung Galaxy Watch7 - LTE · 40mm suits wrists around 43–58mm wide, and the Samsung Galaxy Watch8 LTE Classic around 49–66mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Samsung Galaxy Watch7 - LTE · 40mm and Samsung Galaxy Watch8 LTE Classic side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.