| Price | $79 | $69 | $99 | $89 | $55 | $59 | $99 | $49 | $49 | $79 | $79 | $79 |
| Product Announce Date | Jan 7th, 2013 | Jan 30th, 2019 | Sept 16th, 2013 | Jan 5th, 2017 | Jun 19th, 2012 | January 29th, 2020 | Jun 15, 2011 | May 7th, 2020 | Jan 6th, 2014 | Jan 6th, 2014 | May 7th, 2020 | Jan 6th, 2014 |
| Product Availability Date | July 2013 | Jan 2019 | Nov 2013 | Jan 2017 | July 2012 | January 2020 | Sept 2012 | May 7th, 2020 | Apr 2014 | May 1st, 2014 | May 7th, 2020 | Sept 1st, 2014 |
| Measurement Type | ECG | ECG | ECG | ECG | ECG | ECG | ECG | ECG | ECG | ECG | ECG | ECG |
| Typical Placement | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap | Chest Strap |
| Battery Life | 200 hours | 3.5 years | 1-2 years | 1-2 years | 1-2 years | 1 year | 1-2 years | 500 hours | 350 hours | 1-2 years | 500 hours | 1-2 Years |
| Battery Type | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2025 | Coin Cell CR2032 | Coin Cell CR2025 | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2032 | Coin Cell CR2032 |
| NFC Capable | No | No | No | No | | No | | No | No | | No | No |
HR Transmission | 4iiii Viiiiva | Garmin HRM-DUAL | Garmin HRM-RUN | Polar H10 | Polar H7 | Polar H9 | PowerTap PowerCal (Dual ANT+/BLE) | Wahoo TICKR (2020 Edition) | Wahoo TICKR (Original) | Wahoo TICKR RUN | Wahoo TICKR X (2020 Edition) | Wahoo TICKR X (Original) | | ANT+ | Yes | Yes | Yes | Yes (with firmware update) | No | Yes | Yes (Specific model) | Yes | Yes | Yes | Yes | Yes |
| Bluetooth Smart | Yes | YES (DUAL BLE CHANNELS) | No | Yes (dual BLE channels) | Yes | Yes | Yes (Specific model) | YES (Three BLE CHANNELS) | Yes | Yes | YES (Three BLE CHANNELS) | Yes |
| Dual concurrent ANT+/BLE | Yes | Yes | No | Yes | No | Yes | No | Yes | Yes | Yes | Yes | Yes |
| Analog for gym equipment | No | No | No | Yes | Yes | Yes | No | No | No | No | No | No |
| Usable HR data underwater | No | No | No | YES (WITH CERTAIN OLDER 5KHZ WATCHES) | Yes | Yes (with certain older 5kHz watches) | No | No | No | No | No | No |
| Bridging ANT+ to Bluetooth Smart | Yes | No | No | No | No | No | No | No | No | No | No | No |
| Can record activity in memory | yes | No | No | Yes | No | No | No | No | No | No | Yes | Yes |
Additional Data | 4iiii Viiiiva | Garmin HRM-DUAL | Garmin HRM-RUN | Polar H10 | Polar H7 | Polar H9 | PowerTap PowerCal (Dual ANT+/BLE) | Wahoo TICKR (2020 Edition) | Wahoo TICKR (Original) | Wahoo TICKR RUN | Wahoo TICKR X (2020 Edition) | Wahoo TICKR X (Original) | | Run Pace | No | No | No | No | No | No | No | No | No | Yes | Yes | Yes |
| Run Cadence | No | No | Yes | No | No | No | No | No | No | Yes | Yes | Yes |
| Run Economy/Metrics | No | No | Yes (ANT+ Running Dynamics) | Only to RaceFox app | No | No | No | No | No | Yes | Yes (ANT+ Running Dynamics) | Yes |
| Cycling Cadence | No | No | No | No | | No | | No | No | | Yes (ANT+/Bluetooth Smart) | Yes |
| Cycling Power Meter Estimation | Can pass through ANT+ PM's | No | No | No | | No | Yes | No | No | No | No | No |
| Valid HRV/RR data | Yes | ANT+ Yes, BLE No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Configurable Sport Modes | Sorta | No | No | Sorta | | No | | No | No | | Sorta via app | Sorta |
| Displays HR Zones | No | No | No | No | | No | | No | No | | No | No |
| Requires Bluetooth Smart Phone for Configuration | Yes (for bridging only) | No | No | Yes | No | No | No | No | No | For Running Metrics Only | No DoubleTap only | For Running Metrics Only & DoubleTap |
| Firmware Updateable | Yes | Yes | Via Garmin device/ANT+ Stick | Yes | No | Yes | No | Yes (iOS/Android) | Yes (iOS/Android) | Yes (iOS/Android) | Yes | Yes |
App | 4iiii Viiiiva | Garmin HRM-DUAL | Garmin HRM-RUN | Polar H10 | Polar H7 | Polar H9 | PowerTap PowerCal (Dual ANT+/BLE) | Wahoo TICKR (2020 Edition) | Wahoo TICKR (Original) | Wahoo TICKR RUN | Wahoo TICKR X (2020 Edition) | Wahoo TICKR X (Original) | | Can show workout afterwards | Yes | No | No | Yes | | No | | No | No | | Yes | Yes |
| Can sync files/workout to 3rd party | Yes | No | No | Yes | | No | | No | No | | Yes | Yes |
| More Info | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link |
Purchase | 4iiii Viiiiva | Garmin HRM-DUAL | Garmin HRM-RUN | Polar H10 | Polar H7 | Polar H9 | PowerTap PowerCal (Dual ANT+/BLE) | Wahoo TICKR (2020 Edition) | Wahoo TICKR (Original) | Wahoo TICKR RUN | Wahoo TICKR X (2020 Edition) | Wahoo TICKR X (Original) | | Amazon | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link |
| Backcountry.com | | | | | | | | Link | Link | | Link | |
| Competitive Cyclist | | | | | | | | Link | | | Link | |
| REI | | Link | | Link | | | | Link | | | | |
| TPC | | | | | | | | Link | | | | |