Basic Info |
| Wear Type | Wristband | Wristband | |
| Price | | $23490 | |
| Ratings | | | |
Activity & Fitness |
| Activity | No | Yes | Garmin Forerunner 645 tracks your activity |
| Calories | Yes | Yes | Both track calories burned |
| Sleep | No | Yes | Garmin Forerunner 645 monitors your sleep pattern |
| Heart Rate / Pulse | Yes | Yes | Both have heart rate tracking |
| VO2 Max | No | Yes | You can monitor your VO2 max with Garmin Forerunner 645 |
| Distance | Yes | Yes | Both track your stride length |
| Steps | No | Yes | Garmin Forerunner 645 has built-in pedometer to count steps |
| Pace | No | Yes | |
| Speed | No | Yes | |
| Stairs / Floors | No | Yes | Garmin Forerunner 645 counts your climbing stairs or floors |
| Exercise Tagging | No | Yes | Only Garmin Forerunner 645 provides exercise tagging |
| Smart Coach | No | No | Both don't have coaching feature |
| Goal Setting | Yes | Yes | Both can help with your goals setting |
| Inactivity Alert | n/a | Yes | Garmin Forerunner 645 helps you stay active with inactivity alert |
Additional Features |
| GPS | Yes | Yes | Both have integrated GPS modules |
| Glonass | No | Yes | |
| Compass | n/a | Yes | Garmin Forerunner 645 has a compass |
| Watch / Clock | Yes | Yes | Both have watch |
| Alarm Clock | Yes | Yes | Both have alarm clock |
| Reminders | No | Yes | Garmin Forerunner 645 has a reminder option |
| Stopwatch | No | Yes | Garmin Forerunner 645 has a stopwatch |
| Music Playback | n/a | No | Both don't have music playback |
| Temperature | No | Yes | |
| Reports | | Activity, Sleep | |
Smartphone Remote Features |
| Notifications | No | Yes | If you get a phone notification, Garmin Forerunner 645 make an alert for you |
| Caller ID | No | Yes | Garmin Forerunner 645 can notify you who is calling |
| Music Control | No | Yes | Garmin Forerunner 645 allows control smartphone music player |
| Call Control | n/a | Yes | Garmin Forerunner 645 allows you control phone calls |
| Camera Control | n/a | No | Both don't have camera control |
| Find Phone | n/a | Yes | Garmin Forerunner 645 allows you to locate your phone |
Battery |
| Duration | 42 days | 7 days | Garmin Forerunner 620 battery life is about 6.0 times longer |
| Battery Type | Rechargeable Battery | Rechargeable Battery | |
Physical Specs |
| Weather Resistance | Yes | Yes | |
| Waterproof | Yes | Yes | |
| IP Rating | n/a | 5 ATM | |
| Weight | 44 grams | 42.2 grams | Both are the same weight |
User Interface |
| Display | LCD Screen | LCD Screen | |
| Display Size | n/a | 1,2 inches | |
| Screen Resolution |
n/a
|
240x240 pixels
| |
| Color Display | n/a | Yes | |
| Touch Screen | n/a | No | |
| Gorilla glass | No | Yes | *Specialized toughened glass: thin, light and damage-resistant |
Compatibility |
| Android | Yes | Yes | Both compatible with Android devices |
| iOS | Yes | Yes | Both compatible iOS devices |
| OS X/Mac | No | Yes | Garmin Forerunner 645 compatibles with MacBooks and iMacs |
| Windows Phone | No | No | Both don't compatible with Windows Phone devices |
| Windows | No | Yes | Garmin Forerunner 645 allows you to locate your phone |
| Web Portal | Yes | Yes | Both have access to online web portal |
| Social Features | n/a | Yes | You can integrate Garmin Forerunner 645 with social networks and share information |
Connectivity |
| Bluetooth | Yes | Yes | Both have Bluetooth data transfer technology |
| Wi-Fi | No | Yes | Select Garmin Forerunner 645 if you need a built-in Wi-Fi connectivity |
| NFC | No | No | Both don't have NFC connectivity |
| ANT+ | Yes | Yes | Both provide ANT+ wireless technology |
| Buy on Amazon | Buy on Amazon | |
