How to find the right product for you
This Product Comparison Calculator will allow you to compare products in one of two ways. Choose from the two dropdown menus below to auto-populate the product boxes with results, or click on the product boxes to activate your own personalized choices. Once the product boxes are shaded per your liking, click the “COMPARE NOW” button to retrieve a customized product comparison graph.
Currently there are eight product types:
– Watches (and bike computers!!!!)
– Trainers (for cycling indoors)
– Activity monitors (things like Fitbits and step counters)
– Power meters (for cycling)
– Action Cams (things like GoPro’s and the like)
– Heart Rate Sensors (Straps and Optical sensors that measure HR)
– Trainer Apps (for cycling indoors on trainers)
– Drones (primarily sport focused options)
For trainers, the focus is primarily on computer-integrated trainers that provide resistance control. Additionally, like the watches I only include units that I’ve personally reviewed and/or used.
Select product use/budget for a comparison from the drop down menus:
Note: While many running watches have a basic bike mode, only running units that are multi-sport focused are also included in the bike-only results (in addition to bike-specific units). Hiking units are those that include a Barometric Altimeter, Magnetic Compass and navigational functions.
Or select products for comparison by clicking the product boxes below:
Comparison Results:
Function/Feature | Garmin Forerunner 305 | Garmin Forerunner 620 |
---|---|---|
Copyright DC Rainmaker - Updated April 9th, 2021 @ 10:21 am New Window | ||
Price | Discontinued | $399 |
Product Announcement Date | JAN 3, 2006 | SEPT 16, 2013 |
Actual Availability/Shipping Date | FEB 2006 | OCT 31, 2013 |
GPS Recording Functionality | Yes | Yes |
Data Transfer | USB | USB, WiFi, Bluetooth Smart |
Waterproofing | IPX7 | 50 meters |
Battery Life (GPS) | 10 Hours | 10 hours |
Recording Interval | 1s or Smart | 1-second & Smart |
Alerts | Sound/Visual | Audio/Visual/Vibrate |
Backlight Greatness | Good | Great |
Ability to download custom apps to unit/device | No | No |
Acts as daily activity monitor (steps, etc...) | No | No | Connectivity | Garmin Forerunner 305 | Garmin Forerunner 620 |
Bluetooth Smart to Phone Uploading | No | Yes |
Phone Notifications to unit (i.e. texts/calls/etc...) | No | No |
Live Tracking (streaming location to website) | No | Yes |
Emergency/SOS Message Notification (from watch to contacts) | No | No |
Built-in cellular chip (no phone required) | No | No | Cycling | Garmin Forerunner 305 | Garmin Forerunner 620 |
Designed for cycling | Yes | Barely (Speed mode only) |
Power Meter Capable | No | No |
Speed/Cadence Sensor Capable | Yes | Yes |
Strava segments live on device | No | Running | Garmin Forerunner 305 | Garmin Forerunner 620 |
Designed for running | Yes | Yes |
Footpod Capable (For treadmills) | Yes | Yes (internal accelerometer) |
Running Dynamics (vertical oscillation, ground contact time, etc...) | No | Yes |
VO2Max Estimation | No | Yes |
Race Predictor | No | Yes |
Recovery Advisor | No | Yes |
Run/Walk Mode | No | Yes | Swimming | Garmin Forerunner 305 | Garmin Forerunner 620 |
Designed for swimming | No | No (protected though just fine) |
Openwater swimming mode | No | N/A |
Lap/Indoor Distance Tracking | No | N/A |
Record HR underwater | No | No |
Openwater Metrics (Stroke/etc.) | No | N/A |
Indoor Metrics (Stroke/etc.) | No | N/A |
Indoor Drill Mode | No | N/A |
Indoor auto-pause feature | No | N/A |
Change pool size | No | N/A |
Indoor Min/Max Pool Lengths | No | N/A |
Ability to customize data fields | No | N/A |
Captures per length data - indoors | No | N/A |
Indoor Alerts | No | N/A | Triathlon | Garmin Forerunner 305 | Garmin Forerunner 620 |
Designed for triathlon | Yes | No |
Multisport mode | Yes | No | Workouts | Garmin Forerunner 305 | Garmin Forerunner 620 |
Create/Follow custom workouts | Yes | Yes |
On-unit interval Feature | Yes | Yes |
Training Calendar Functionality | No | Yes | Functions | Garmin Forerunner 305 | Garmin Forerunner 620 |
Auto Start/Stop | Yes | Yes |
Virtual Partner Feature | Yes | Yes |
Virtual Racer Feature | No | No |
Records PR's - Personal Records (diff than history) | No | Yes |
Tidal Tables (Tide Information) | No | No |
Weather Display (live data) | No | No | Navigate | Garmin Forerunner 305 | Garmin Forerunner 620 |
Follow GPS Track (Courses/Waypoints) | Yes | No |
Markers/Waypoint Direction | No | No |
Routable/Visual Maps (like car GPS) | No | No |
Back to start | Yes | No |
Impromptu Round Trip Route Creation | No | No |
Download courses/routes from phone to unit | No | No | Sensors | Garmin Forerunner 305 | Garmin Forerunner 620 |
Altimeter Type | GPS | GPS |
Compass Type | GPS | N/A |
Optical Heart Rate Sensor internally | No | |
Heart Rate Strap Compatible | Yes | Yes |
ANT+ Heart Rate Strap Capable | Yes | Yes |
ANT+ Speed/Cadence Capable | Yes | Yes |
ANT+ Footpod Capable | Yes | Yes |
ANT+ Power Meter Capable | No | No |
ANT+ Lighting Control | No | |
ANT+ Bike Radar Integration | No | |
ANT+ Trainer Control (FE-C) | No | |
ANT+ Remote Control | No | No |
ANT+ eBike Compatibility | No | No |
Shimano Di2 Shifting | No | |
Bluetooth Smart HR Strap Capable | No | No |
Bluetooth Smart Speed/Cadence Capable | No | No |
Bluetooth Smart Footpod Capable | No | No |
Bluetooth Smart Power Meter Capable | No | No |
Temp Recording (internal sensor) | No | No |
Temp Recording (external sensor) | No | No | Software | Garmin Forerunner 305 | Garmin Forerunner 620 |
PC Application | GTC | Garmin Express |
Web Application | Garmin Connect | Garmin Connect |
Phone App | Garmin Fit | iOS/Android |
Ability to Export Settings | No | Yes | Purchase | Garmin Forerunner 305 | Garmin Forerunner 620 |
Amazon | Link | Link | DCRainmaker | Garmin Forerunner 305 | Garmin Forerunner 620 |
Review Link | Link | Link |