Side by side comparison and review of Garmin Forerunner 45S and Garmin vívoactive 4. Compare design, displays, functions, batteries and other key specifications and features to simplify the choice of your perfect smartwatch. Our goal is to make it easier for you to decide on the watch that will best meet your expectations by revealing the main differences between the products.
| GENERAL | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Product Type | Sport watch | Sport watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS, Android |
| Wearing Style | Watch style | Watch style |
| Width | 39.5 mm | 45.1 mm |
| Height | 39.5 mm | 45.1 mm |
| Depth | 11.4 mm | 12.8 mm |
| Weight | 32 g | 50.5 g |
| Body Material | - | Stainless steel, fibre-reinforced polymer |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Sensors | Accelerometer, heart rate | Accelerometer, thermometre, altimeter, gyro sensor, heart rate, electromagnetic compass, Pulse Ox sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, sleep activity, heart rate, stress level | Distance, time, calories burned, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, menstrual cycle, breathing rate, hydration |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device | Music remote handling, find phone function, idle alert, HR zones, Move IQ, Garmin Connect compatible, Find my Device, store & play music, rejecting a call, Garmin Elevate, TrueUp, Body Battery |
| Notifications | Calendar, Email, social apps | SMS, incoming calls |
| Vibrating Alert | Yes | - |
| Navigation (GPS) | - | GPS/GLONASS/Galileo receiver |
| Payment Technology | - | Garmin Pay |
| CONNECTIVITY | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Wireless Interface | Bluetooth, ANT+ | Bluetooth, Wi-Fi, NFC, ANT+ |
|---|
| DISPLAY | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | Memory-in-Pixel LCD - colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 260 x 260 pixels |
| Screen Size | 1.04" | 1.3" |
| Screen Protection | - | Corning Gorilla Glass 3 (scratch resistant glass) |
| INPUT DEVICE | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Type | - | Touch sensitive screen, touch buttons |
|---|
| CASE | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Case Size | - | 45 mm |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | - | Slate stainless steeel |
| Case Back | - | Polymer |
| Case Details | White | Iris | Black | Black | Shadow grey |
| BAND | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | S | - |
| Band Width | - | 22 mm |
| Fits Wrist with Circumference | 124-185 mm | 135-200 mm |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | White | Iris | Black | Black | Shadow grey |
| BATTERY | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Technology | - | Lithium polymer |
|---|---|---|
| Battery Life | - | 8 day(s) |
| Battery Life Details | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
Smartwatch mode - up to 8 days GPS mode - up to 18 hour(s) Smartwatch with music mode - up to 7.5 hour(s) GPS with Music mode - up to 6 hour(s) |
| Rechargeable Battery | - | Yes |
| MISCELLANEOUS | Garmin Forerunner 45S | Garmin vívoactive 4 |
|---|
| Included Accessories | Charging/data cable | Charging/data cable |
|---|---|---|
| Preloaded Software | - | Garmin Pay, Garmion Connect IQ |
| Max Depth of Water Resistance | 50 m | 50 m |
| Max Operating Temperature | - | 60 °C |
| Min Operating Temperature | - | -20 °C |
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