garmin forerunner 645 vs 935 vs 945 compared

Garmin Forerunner 645 vs 935 vs 945 Compared

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Featured in this comparison, is the newly released Forerunner 945, the older Forerunner 935 and the relatively new Forerunner 645 – Three of the best smartwatches from Garmin, all fitness focused and among the best for comprehensive fitness tracking. These three share a lot of features in common with some few differences. We compare the Forerunner 645 vs 935 vs 945 specs and features so you know what the differences are and which is the best choice for you.

Garmin Forerunner 645 vs 935 vs 945 Specs Compared

 Garmin Forerunner 645Garmin Forerunner 935Garmin Forerunner 945
garmin forerunner 645 vs 935 VS 945
garmin forerunner 935 vs 645 vs 945
Credit: Garmin
garmin forerunner 945 vs 935 vs 645

EDITOR'S RATING

Design:
4.1 out of 5 stars (4.1 / 5)
Battery:
4.1 out of 5 stars (4.1 / 5)
Fitness tracking:
4.5 out of 5 stars (4.5 / 5)
Features:
4 out of 5 stars (4.0 / 5)
Price:
3.4 out of 5 stars (3.4 / 5)
Average:
4 out of 5 stars (4.0 / 5)
Design:
4 out of 5 stars (4.0 / 5)
Battery:
4.2 out of 5 stars (4.2 / 5)
Fitness tracking:
4.5 out of 5 stars (4.5 / 5)
Features:
3.9 out of 5 stars (3.9 / 5)
Price:
3.3 out of 5 stars (3.3 / 5)
Average:
4 out of 5 stars (4.0 / 5)
Design:
4.4 out of 5 stars (4.4 / 5)
Battery:
4 out of 5 stars (4.0 / 5)
Fitness tracking:
4.6 out of 5 stars (4.6 / 5)
Features:
4.2 out of 5 stars (4.2 / 5)
Price:
3.4 out of 5 stars (3.4 / 5)
Average:
4.1 out of 5 stars (4.1 / 5)

WHERE TO BUY

BUY AT AMAZON BUY AT AMAZON BUY AT AMAZON

ABOUT DEVICE

Device nameGarmin Forerunner 645Garmin Forerunner 935Garmin Forerunner 945
Device typeSporty/FitnessSporty/FitnessSporty/Fitness
Predessesor----Garmin Forerunner 935
Successor--Garmin Forerunner 945--
Released dateApril, 2018March, 2017April, 2019
Ideal forMen (will look good too on women.)Men (will look good too on women.)Men (will look good too on women.)

DISPLAY

Display typeTransflective memory-in-display (MIP)Transflective memory-in-display (MIP)Transflective memory-in-display (MIP)
Display size1.2 inch1.2 inch1.2 inch
Screen resolution240 x 240 pixels240 x 240 pixels240 x 240 pixels
Input type 5 buttons, not touchscreen 5 buttons, not touchscreen 5 buttons, not touchscreen

BODY

ShapeCircularCircularCircular
Dimension42.5 x 42.5 x 13.5 mm47 x 47 x 13.9 mm47 x 47 x 13.7 mm
Weight42.2 grams 49 grams 50 grams
Casing materialFiber-reinforced polymerFiber-reinforced polymerFiber-reinforced polymer
Strap materialSilicone Silicone Silicone
Bezel MaterialStainless steelFiber-reinforced polymerFiber-reinforced polymer
Band size20mm22mm22mm
Screen protectionCorning Gorilla glass 3Chemically strengthened glassCorning® Gorilla® Glass DX
Water resistantYes, 5ATMYes, 5ATMYes, 5ATM
Color(s)Black, cerise, sandstoneBlackBlack

MEMORY

RAM------
Internal storage200 hours of activity data/up to 500 music tracks64MBUp to 1000 songs
Memory card slotNoNoNo

CONNECTIVITY

BluetoothBluetooth v4.1, ANT+ Bluetooth v4.1, ANT+ Bluetooth v4.2, ANT+
Wi-FiYesYesYes
NFCYes--Yes
GPSYes, GPS/GLONASS/GalileoYes, GPS/GLONASS/GalileoYes, GPS/GLONASS/Galileo

CELLULAR TECHNOLOGY

Technology------
SIM slotNoNoNo
Band------

NOTIFICATIONS

Email alertYesYesYes
SMS alertYesYesYes
Calls alertYesYesYes
Event reminderYesYesYes
Weather forecastYesYesYes
Third-party App notificationsYesYesYes

FITNESS TRACKING

Sleep trackingYesYesYes
Heart rate monitoringYesYesYes
Distance coveredYesYesYes
Steps climbedYesYesYes
CaloriesYesYesYes

MEDIA

Audiomp3/mp4--mp3/mp4
Bluetooth musicYesNoYes
RadioNoNoNo
LoudspeakerNoNoNo
MicrophoneNoNoNo
CameraNoNoNo

SENSORS

AltimeterYesYesYes
Accelerometer YesYesYes
Magnetometer YesYesYes
Heart rate monitor (HRM)YesYesYes
BarometerYesYesYes
Gyroscope YesYesYes
Ambient light------
Other sensorsThermometer, Compass--Thermometer, Pulse Ox

PLATFORM

Operating system (OS)Proprietary OS Proprietary OS Proprietary OS
Chipset
CPU------
GPU------

BATTERY

Type of batteryLithium-ionLithium-ionLithium-ion
Battery capacity ------
Battery lifeSmartwatch Mode: Up to 7 days
GPS mode with music: Up to 5 hours
GPS mode without music: Up to 14 hours
Smartwatch Mode: Up to 2 weeks
GPS/HR mode: Up to 24 hours
Smartwatch Mode: Up to 2 weeks
GPS mode with music: Up to 10 hours
GPS mode without music: Up to 36 hours
ChargingUSB charging cableUSB charging cableUSB charging cable
Charging timeAbout 2 hoursAbout 2 hoursAbout 2 hours

MISC

Payment systemYesNoYes
Compatibility Android and iOSAndroid 4.4+,
iOS 8.0+
Android and iOS
Companion appGermin connect IQ storeGermin connect IQ storeGermin connect IQ store
Customizable watch faceYesYesYes
Interchangeable band Yes,20mmYes,22mmYes,22mm
Voice commandNoNoNo

IN THE BOX CONTENTS

Garmin Forerunner 645Garmin Forerunner 935Garmin Forerunner 945
StrapStrapStrap
USB charging cableUSB charging cableUSB charging cable
User manualUser manualUser manual

PRICE

About $450About $450About $600

What’s the Difference?

Garmin Forerunner 645 vs 935 vs 945 Features compared

  1. Garmin Forerunner 645 vs 935 vs 945: Design

  2. All three devices look decent and stylish in their respective ways. However, we have a Forerunner 645 with a smaller case size compared to the other two which are quite bulky. The 645 is also a bit slimmer than the 945 and 935 and has a smaller 20mm straps size as compared to 22mm on the 935 and 945 which clearly suggests that the Forerunner 645 as a great choice for women while the 945 and 935 will suit men better.

    The stainless steel bezel of the 645 also gives it the classic appearance that makes it nice fit for official outings, but the finely crafted bezel of the 945 with the stylish markings is quite more commanding and outstanding.

    As per durability, the 945 and 645 both have Corning Gorilla glass manning the screens which is more durable than the undisclosed chemical strengthened glass of the 935 which means the 645 and 945 can well do with some knocks and still work fine (Better choices for adventure).

  3. Garmin Forerunner 645 vs 935 vs 945: Connectivity

  4. The Forerunner 645 and 945 joins the list of Garmin’s smartwatches with NFC that supports Garmin Pay – a contactless payment system that allows you to make payment on the go from these two. Unlike the 935 which doesn’t have NFC.

  5. Garmin Forerunner 645 vs 935 vs 945: Fitness Tracking

  6. As per fitness tracking, these three remain some of the best choices for fitness tracking. Each is packed with all the standard sensors as you’d find other high-end fitness smartwatches.

    However, the new 945 comes with a Pulse Ox sensor that will be able to monitor blood oxygen level which is very insightful during acclimation activity helping you see how your body is adjusting to higher levels.

    The Forerunner 945 also features the Garmin Coach that provides guidance and free adaptable training plans that suit your training style. You can as well create your own custom workout modes.

    Also lacking on the 645 and 935, but available on the 945 is the full color topography map feature that’s also available on the Fenix 5X Plus. The full color map helps you navigate your way through even difficult terrains.

  7. Garmin Forerunner 645 vs 935 vs 945: Media

  8. While the Forerunner 645 and 945 allow you store your music on the watch which you can enjoy on the go, the 935 lacks that feature. Moreover, the Forerunner 945 has a higher onboard storage than the 645 as it can take up to 1000 tracks as against 500 on the 645.

  9. Garmin Forerunner 645 vs 935 vs 945: Battery Life

Each of these three has a remarkable battery life that last long enough to see you through a couple of days. However, the 935 and 945 have slight longer battery life than the 645.

While you get about 10 days on regular usage with 935 or 945, you will get less than that with the 645, about 6 days which is still impressive.

Garmin Forerunner 645 vs 935 vs 945: Which is Better?

From the features and design, all three devices are great choices for comprehensive fitness tracking and have decent appearances. However, the Forerunner 645 and 945 have more features than the 935 with the 945 having the most features in respect to the presence of Pulse Ox and full color map which aren’t present on the other two.

Obviously the Forerunner 945 is the best choice, it’s the most comprehensive with more features, and as well, the spectacular compact design and the long battery life makes it such a great bargain even at $600. A great choice for men, professional runners and other athletes alike.

On the other hand, the Forerunner 645 also spots a decent appearance with a rich list of features which certainly makes it a better choice over the 935 and going by the sizes, the 645 is a great choice for women.

The Forerunner 935 cost almost about same price as the 645, although lacks some few features, but has a longer battery life. It’s a nice alternative to the 945 which is somewhat pricey, but that justifies the more features.

Here is a summary;

Garmin Forerunner 945 The best choice, a more comprehensive fitness tracker with impressive long battery life. A great choice for men.
Garmin Forerunner 645 A comprehensive fitness smartwatch, a great choice for women.
Garmin Forerunner 935 A nice alternative to the 945 with long battery life.
Our Pick

The Garmin Forerunner 945 is a more comprehensive choice with more features and an outstanding design that makes it such a great choice in the gym and off the gym. It’s our preferred choice.

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