Samsung Galaxy Watch 3 41mm vs 45mm – Find Out The Differences

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The Samsung Galaxy Watch 3 is a beauty to behold. It’s slimmer, more compact, and weighs a little less than its predecessor, the Galaxy Watch. It also comes with blood oxygen measurement with more features added to the running coach app. While the Galaxy Watch Active 2 and its predecessor, Galaxy Watch Active have a digital rotating bezel, the Galaxy Watch 3 just like its successor, the Galaxy Watch 4 Classic has a physical rotating bezel that allows for effortless navigation. The Galaxy Watch 3 is also available in two sizes; 41mm and 45mm, and in this post, we compare Samsung Galaxy Watch 3 41mm vs 45mm to find out all the differences to help you make the right choice.

Galaxy Watch 3 41mm vs 45mm
The Galaxy Watch 3 comes in two sizes, 41mm and 45mm. And each of these sizes is available in LTE and Bluetooth versions

Samsung Galaxy Watch 3 (41mm) vs (45mm) Full Specifications Comparison

Product Info
samsung galaxy watch 3 (41mm) (Bluetooth) full specs

Samsung Galaxy Watch 3 (41mm) Full Smartwatch Specifications, Features and Price

samsung galaxy watch 3 full specs

Samsung Galaxy Watch 3 (45mm) Full Smartwatch Specifications, Features and Price

Price $114.99 -
Device name Samsung Galaxy Watch 3 (41mm) (Bluetooth) Samsung Galaxy Watch 3 (45mm) (Bluetooth)
Device type Fitness/Classic smartwatch Fitness/Classic smartwatch
Gender Women Men
Release date August, 2020 August, 2020
Predecessor Samsung Galaxy Watch Samsung Galaxy Watch
Versions Bluetooth, LTE, Titanium Bluetooth, LTE, Titanium
Dimension 42.5 x 41 x 11.3 mm 46.2 x 45 x 11.1 mm
Weight 48.2g (excluding straps) 53.8g (excluding straps)
Shape Circular Circular
Case material Stainless steel 316L Stainless steel 316L
Strap material Leather Leather
Bezel material Stainless steel 316L Stainless steel 316L
Strap size 20 mm 22 mm
Interchangeable strap 20mm, Yes 22 mm, Yes
Screen protection Corning Gorilla glass DX+ Corning Gorilla glass DX+
Water resistance Yes, 5ATM Yes, 5ATM
Durability test MIL-STD-810G MIL-STD-810G
Swim-proof Yes, recommended Yes, recommended
Color Mystic bronze, Mystic silver Mystic black, Mystic silver
Display size 1.2 inches 1.4 inches
Display type Super AMOLED, Full color Super AMOLED, Full color
Display resolution 360 x 360 pixel 360 x 360 pixel
Pixel density 364 ppi 364 ppi
Always on Yes Yes
Custom watch face Yes Yes
Input type 2 Physical buttons, Physical rotating bezel, Touchscreen 2 Physical buttons, Physical rotating bezel, Touchscreen
Bluetooth Bluetooth v5.0 Bluetooth v5.0
Bluetooth calling Yes Yes
NFC Yes Yes
Wi-Fi Yes Yes
Memory card slot No No
Technology None None
SIM type None None
SMS alert Yes Yes
Calls alert Yes Yes
Email alert Yes Yes
Event reminder Yes Yes
Third-party apps alert Yes Yes
Reply to Notifications - -
Audio mp3/mp4 mp3/mp4
Bluetooth music Yes Yes
Loudspeaker Yes Yes
Microphone Yes Yes
Camera No No
Radio No No
Blood oxygen Yes Yes
Blood Pressure Yes Yes
Calories Yes Yes
Distance Yes Yes
ECG tracking Yes Yes
Heart rate monitoring Yes Yes
Sleep tracking Yes Yes
Steps Yes Yes
Floors climbed Yes Yes
Stress Yes Yes
Fall detection Yes Yes
Menstrual cycle Yes Yes
VO2 Max Yes Yes
Swim-tracking Yes Yes
Underwater heart rate tracking
On-screen workout No No
Sport modes 40 40
Battery type Non-removable Li-ion battery Non-removable Li-ion battery
Battery capacity 247mAh 340mAh
Battery life Regular: 2 days Regular: 2 days+
Charging type Charging dock, WPC based wireless charging Charging dock, WPC based wireless charging
Charging time 1-2 hours 1-2 hours
Solar charging No No
Chipset Exynos 9110 Exynos 9110
CPU Dual core 1.15GHz Dual core 1.15GHz
GPU Mali™-T720 MP1 Mali™-T720 MP1
Operating system Tizen 5.5 Tizen 5.5
Companion app Samsung Health App Samsung Health App
Compatibility Android 5.0+ & RAM 1.5GB+, iPhone 5+ and iOS 9.0+ Android 5.0+ & RAM 1.5GB+, iPhone 5+ and iOS 9.0+
Payment system Samsung Pay Samsung Pay
Voice command Yes, Bixby Yes, Bixby
Find my phone Yes Yes
Box content Charger, Manual, Samsung Galaxy Watch 3, Straps Charger, Manual, Samsung Galaxy Watch 3, Straps

Samsung Galaxy Watch 3 (41mm) vs (45mm) Differences Compared

Both models of the Galaxy Watch 3 have the same features and body materials but differ in the case dimensions, battery capacity, display, colors, and price. The 41mm model has a smaller 1.2 inches display compared to the 1.4 inches of the 45mm unit. The 41mm unit is also more compact and weighs a little less than the 45mm.

While the 41mm unit is available in mystic bronze and silver colors, 45mm is available in mystic black and mystic silver colors.

The 45mm unit of Galaxy Watch 3 has a bigger 340mAh battery capacity compared to 247mAh of 41mm. Samsung claims the 45mm can last up to 2 days with mixed usage, and from experience with the Galaxy Watch where the 46mm has a longer battery life than 42mm due to its larger battery capacity, the 45mm also has a slightly longer battery life than 41mm.

From my various tests, the Galaxy Watch 3 45mm gets me about 2 days of battery life on average.

Prices of 45mm start at $430 for Bluetooth only model, and $480 for the LTE model, while the 41mm price starts at $399 for the Bluetooth model and $430 for the LTE model.

There’s also a titanium model of the Galaxy Watch 3 which is priced higher and weighs less than both the stainless steel edition of the 45mm and 41mm.

Which Should You Buy?

Samsung Galaxy Watch 3 features blood oxygen measurement

These two offer the same features, the better choice for you will depend on your wrist size. The 41mm model will make a perfect fit for women while the 45mm will be a perfect choice for men and those with fatter wrists.

Samsung Galaxy Watch 3 Features

  • 1.4/1.2 inches always-on AMOLED display with touchscreen support, 2 physical buttons and physical rotating bezel.
  • 5ATM (50 meters) Swim-proof, eject water from the loudspeaker after immersion in water.
  • Over 50000 custom watch faces to choose from.
  • Rugged smartwatch with MIL-STD-810G- US military grade rating for shock.
  • 1GB RAM and 8GB storage capacity with support for streaming on Spotify.
  • Has microphone and loudspeaker.
  • Use Bixby voice assistant to perform simple tasks and control smartthings devices with your voice.
  • Contactless payment on the go with Samsung pay.
  • Make calls with Bluetooth connection to your phone.
  • LTE model is a standalone smartwatches that allows you make and receive calls from the watch independent of your phone.
  • Keeps you connected to all that matters to you like email, SMS, reminders, weather forecast, unlock phone, music playback on phone, remote camera control and notifications from third-party apps are beamed to your watch.
  • NEW Chat with image and chat history, as well as chat with emoji
  • NEW Smart reply analyses your messages and texts to recommend replies.

Samsung Galaxy Watch 3 Fitness Tracking Features

  • Continuously tracks your steps, calories, distance and floors climbed.
  • Comprehensively tracks your sleep in for stages; light, deep, awake and REM.
  • Comprehensively tracks your heart rate continuously.
  • Tracks your stress and helps you manage stress via guided breathing sessions.
  • ECG tracking monitors irregular heart rhythms and can help you detect atrial fibrillations. Cleared by FDA
  • Blood pressure monitoring.
  • Up to 40 preset workout modes and can auto track 7 of these.
  • Blood oxygen saturation monitoring with SpO2 sensors. NEW
  • Incidental fall detection will call emergency contacts when the Galaxy Watch 3 detects a fall. NEW
  • Tracks your fitness level to show your VO2 Max. NEW
  • Features 120 workout home videos that allows you cast workout videos to yout TV and can display your tracked metrics on the TV as you train. NEW