In depth comparison and review of Garmin Forerunner 45S and Apple Watch SE (GPS + Cellular). Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Operating System | - | WatchOS 7 |
| Supported Host Device OS | iOS, Android | iOS 14 or later |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Width | 39.5 mm | - |
| Height | 39.5 mm | - |
| Depth | 11.4 mm | - |
| Weight | 32 g | - |
| Body Details | - | Case only: 30.68 g |
| Body Material | - | Aerospace-grade aluminium alloy |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Sensors | Accelerometer, heart rate | Accelerometer, ambient light sensor, digital compass, gyro sensor, barometric altimeter, optical heart sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, sleep activity, heart rate, stress level | Distance, time, calories burned, activity, sleep activity, heart rate |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device | Call handling, music remote handling, camera remote control, Retina Display technology, Fall detection, Emergency SOS, irregular beat alerts, Family Setup support |
| Notifications | Calendar, Email, social apps | Calendar, SMS, Email, high and low heart rate |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | - | GPS/GNSS receiver |
| Payment Technology | - | Apple Pay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Siri |
| IoT Voice Controlled | - | Direct |
| CELLULAR | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Technology | - | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | - | 4G |
| SIM Card Type | - | Electronic SIM card (e-SIM) |
| CONNECTIVITY | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| 3M UMTS Band | - | Band 1, Band 2, Band 5, Band 8, Band 10 |
|---|---|---|
| 4G LTE Band | - | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 39, Band 40, Band 41, Band 66 |
| Wireless Interface | Bluetooth, ANT+ | IEEE 802.11b/g/n, Bluetooth 5.0 |
| DISPLAY | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | LTPO OLED - colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 324 x 394 pixels |
| Screen Size | 1.04" | - |
| Screen Protection | - | Ion-X glass |
| INPUT DEVICE | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Type | - | Touch sensitive screen |
|---|
| CASE | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Case Size | - | 40 mm |
|---|---|---|
| Case Shape | Round | Rectangular |
| Case Back | - | Sapphire crystal and ceramic back |
| Case Details | White | Iris | Black | Silver aluminium | Gold aluminium | Space grey aluminium |
| Crown Type | - | Digital with haptic feedback |
| BAND | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Band Type | Band | Sport band |
|---|---|---|
| Band Size | S | Regular |
| Fits Wrist with Circumference | 124-185 mm | 130-200 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Pin-and-tuck |
| Band Material | Silicone | Fluoroelastomer |
| Band Colour | White | Iris | Black | Abyss blue | Starlight | Midnight | Abyss blue/moss green | Maize/white | Tornado/grey | White | Pink sand | Black | Charcoal | Plum | Deep navy |
| STORAGE | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Storage Capacity | - | 32 GB |
|---|
| CPU | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Manufacturer | - | Apple |
|---|---|---|
| CPU Type | - | S5 SiP |
| Features | - | W3 Apple wireless chip |
| BATTERY | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Technology | - | Lithium Ion |
|---|---|---|
| Battery Life | - | 18 hours |
| Battery Life Details | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
- |
| Rechargeable Battery | - | Yes |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Garmin Forerunner 45S | Apple Watch SE (GPS + Cellular) |
|---|
| Included Accessories | Charging/data cable | S/M band, M/L band, magnetic charger to USB-C cable (1 m) |
|---|---|---|
| Preloaded Software | - | Apple Pay, GymKit |
| SAR Value | - | 0.18 W/kg (head), 0.92 W/kg (limb) |
| Max Depth of Water Resistance | 50 m | 50 m |
| Manufacturer Model Number | - | A2355 |
| Warranty | - | 1-year warranty |
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