Basic Info |
| Wear Type | Wristband | Wristband | |
| Price | | $23490 | |
| Ratings | | | |
Activity & Fitness |
| Activity | Yes | Yes | Both track daily activity |
| Calories | Yes | Yes | Both track calories burned |
| Sleep | Yes | Yes | Both can track your sleep |
| Heart Rate / Pulse | No | Yes | Garmin Forerunner 645 has the heart rate monitoring sensor |
| External HR Monitor | Yes | No | |
| VO2 Max | No | Yes | Garmin Forerunner 645 shows the maximum volume of oxygen you can consume per minute |
| Distance | Yes | Yes | Both track your running/walking distance |
| Steps | Yes | Yes | Both track how many steps you take |
| Pace | Yes | Yes | |
| Speed | No | Yes | |
| Stairs / Floors | Yes | Yes | Both track elevation, climbing stairs or floors |
| Exercise Tagging | Yes | Yes | Both have exercise tagging feature |
| Smart Coach | No | No | Both don't have coaching feature |
| Goal Setting | Yes | Yes | Both can help with your goals setting |
| Inactivity Alert | Yes | Yes | Both have move reminders |
Additional Features |
| GPS | Yes | Yes | Both have integrated GPS modules |
| Glonass | Yes | Yes | |
| Compass | Yes | Yes | Both have a compass on board |
| Watch / Clock | Yes | Yes | Both have watch |
| Alarm Clock | Yes | Yes | Both have alarm clock |
| Reminders | Yes | Yes | Both have reminder app |
| Stopwatch | Yes | Yes | Both have stopwatch |
| Music Playback | No | No | Both don't have music playback |
| Weather | Yes | No | *Weather forecast |
| Temperature | Yes | Yes | |
| Reports | Activity, Sleep | Activity, Sleep | |
Smartphone Remote Features |
| Notifications | Yes | Yes | Both show smartphone notifications |
| Caller ID | Yes | Yes | Both show caller ID notification |
| Music Control | Yes | Yes | Both allow control smartphone music player |
| Call Control | No | Yes | Garmin Forerunner 645 allows you control phone calls |
| Camera Control | Yes | No | Garmin D2 Bravo Pilot has a smartphone's remote control function |
| Find Phone | Yes | Yes | Both can help find your smartphone |
Battery |
| Duration | 14 days | 7 days | Garmin D2 Bravo Pilot battery life is about 2.0 times longer |
| Battery Type | Rechargeable Battery | Rechargeable Battery | |
Physical Specs |
| Weather Resistance | Yes | Yes | |
| Waterproof | Yes | Yes | |
| IP Rating | 10 ATM | 5 ATM | |
| Weight | 84 grams | 42.2 grams | Garmin Forerunner 645 is 41.8 g lighter |
User Interface |
| Display | LCD Screen | LCD Screen | |
| Display Size | 1.2 inches | 1,2 inches | |
| Screen Resolution |
218 x 218 pixels
|
240x240 pixels
| |
| Color Display | Yes | Yes | |
| Touch Screen | No | No | |
| Sapphire glass | Yes | No | *Scratch resistant sapphire crystal glass |
| 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 | Yes | No | Garmin D2 Bravo Pilot compatibles with a range of Windows Phone devices |
| Windows | No | Yes | Garmin Forerunner 645 allows you to locate your phone |
| Web Portal | No | Yes | Garmin Forerunner 645 allows you upload and view data on the online portal |
| Social Features | No | 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 | Yes | Yes | Both have built-in Wi-Fi wireless connection |
| NFC | No | No | Both don't have NFC connectivity |
| ANT+ | Yes | Yes | Both provide ANT+ wireless technology |
| Buy on Amazon | Buy on Amazon | |
