Garmin is on the third version of its power meter pedal, the Garmin Vector 3. The Vector 3 measures left and right leg power whereas the Vector 3S measures left leg power only. Garmin power meters feature an ultra-slim pedal body, Bluetooth SMART, easy installation and Garmin’s Cycling Dynamics pedaling metrics.
Installation: When it comes to installation, it doesn’t get much easier. Both the Vector 3 and 3S install just like a normal pedal – no torque settings or special tools required. This also allows them to be moved between bikes quickly and easily.
Weight: The Garmin power meters weigh 155 grams per pedal. This is within a few grams of many of the other popular pedal-based power meters.
Power Measurement: The Garmin Vector 3 measures both legs and also measures independent left/right leg power. The Vector 3S measures left leg power and doubles it to approximate total power. It is consistent with how all, left-side power meters operate.
Batteries: The Garmin power meters use a LR44/SR44 battery. This battery is similar to, but not exactly the same, as the CR2032 battery used by other power meters. Battery life is 120-150 hours, longer than any other pedal.
Communication Protocol: Like most power meters that are available today, Garmin power meters are compatible with both ANT+ and Bluetooth SMART devices. This allows you to use the power meter with virtually any headunit, including smart phones.
Accuracy: Garmin power meters are accurate to within +/- 1.0%. This is on par (to slightly better) than the majority of other power meters on the market.
Cadence Detection: Like most power meters, the Garmin power meters use an accelerometer, housed inside the pedal body, to measure cadence. This means you don’t have to worry about attaching a magnet to your frame.
Warranty: Garmin power meters come with a two-year manufacturer’s warranty.