Basic Info | 
| Wear Type | Wristband | Wristband |  | 
| Price | $17999 |  |  | 
| Ratings |  |  |  | 
Activity & Fitness | 
| Activity |  Yes |  Yes | Both track daily activity | 
| Calories |  Yes |  Yes | Both show estimated calories burned | 
| Sleep |  Yes |  No | Polar A300 monitors your sleep pattern | 
| Heart Rate / Pulse |  No |  No | Both don't monitor heart rate | 
| External HR Monitor |  Yes |  No |  | 
| VO2 Max |  No |  Yes | You can monitor your VO2 max with Suunto Ambit2 S | 
| Distance |  Yes |  Yes | Both track your stride length | 
| Steps |  Yes |  No | Polar A300 has built-in pedometer to count steps | 
| Stairs / Floors |  No |  Yes | Suunto Ambit2 S has built-in altimeter for elevation feature | 
| Exercise Tagging |  No |  Yes | Only Suunto Ambit2 S provides exercise tagging | 
| Smart Coach |  Yes |  No | Polar A300 provides real time fitness coaching | 
| Goal Setting |  Yes |  No | Set and keep your own daily or weekly goals with Polar A300 | 
| Inactivity Alert |  Yes |  No | Polar A300 helps you stay active with inactivity alert | 
Additional Features | 
| GPS |  No |  Yes | Suunto Ambit2 S has GPS support | 
| Compass |  No |  Yes | Suunto Ambit2 S has a compass | 
| Watch / Clock |  Yes |  Yes | Both have watch | 
| Alarm Clock |  Yes |  Yes | Both have alarm clock | 
| Reminders |  Yes |  No | Polar A300 has a reminder option | 
| Stopwatch |  No |  Yes | Suunto Ambit2 S has a stopwatch | 
| Music Playback |  No | n/a | Both don't have music playback | 
| Reports | Activity, Sleep | Activity |  | 
Smartphone Remote Features | 
| Notifications |  Yes |  No | If you get a phone notification, Polar A300 make an alert for you | 
| Caller ID |  Yes |  No | Polar A300 can notify you who is calling | 
| Music Control |  No |  No | Both don't have phone music control | 
| Call Control |  Yes |  No | Polar A300 allows you control phone calls | 
| Camera Control |  No |  No | Both don't have camera control | 
| Find Phone |  No |  No | Both don't have a find phone feature | 
Battery | 
| Duration | 26 days | 14 days | Polar A300 battery life is about 1.9 times  longer | 
| Battery Type | Rechargeable Battery | Rechargeable Battery |  | 
Physical Specs | 
| Weather Resistance |  Yes |  Yes |  | 
| Waterproof |  No |  Yes |  | 
| IP Rating | 3 ATM | n/a |  | 
| Weight | 48 grams | 72 grams | Polar A300 is 24.0 g lighter | 
User Interface | 
| Display |  Yes | LCD Screen |  | 
| Display Size | 64x28 inches | n/a |  | 
| Screen Resolution | 
				n/a
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				n/a
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| Color Display |  No |  No |  | 
| Touch Screen |  No |  No |  | 
Compatibility | 
| Android |  Yes |  No | Polar A300 is compatibles with Android phones and tablets | 
| iOS |  Yes |  No | Polar A300 can connect with iPhones or iPads | 
| OS X/Mac |  Yes |  No | Polar A300 compatibles with MacBooks and iMacs | 
| Windows Phone |  Yes |  No | Polar A300 compatibles with a range of Windows Phone devices | 
| Windows |  Yes |  No | Polar A300 allows you to locate your phone | 
| Web Portal |  Yes |  Yes | Both have access to online web portal | 
| Social Features |  Yes |  No | You can integrate Polar A300 with social networks and share information | 
Connectivity | 
| Bluetooth |  Yes |  No | Only Polar A300 has a built-in Bluetooth connection option | 
| Wi-Fi |  No |  No | Both don't have Wi-Fi connection | 
| NFC |  No |  No | Both don't have NFC connectivity | 
| ANT+ |  No |  Yes | Only Suunto Ambit2 S has ANT+ wireless technology | 
 | Buy on Amazon | Buy on Amazon |  |