Polar H7 vs H9 - Where are the differences?
Where are the differences?
Let's take the two heart rate sensors H7* and H9* of the brand Polar and look at the differences.
Heart rate measurement
Both sensors have the ECG measurement. This is very accurate and is recommended rather than the optical measurement.
We have a chest strap on both devices. So it is measured over the chest. This is classic for ECG sensors.
Connection options
Bluetooth has become a very popular option for connecting heart rate sensors and pulse belts. Both the Polar H7 and the Polar H9 offer this. The connection via Bluetooth is mostly used for cell phones or fitness watches. Some new devices in fitness studios also offer Bluetooth as an option.
The standard ANT+ less known. However, it is often used in the field of sports. Some finte watches, especially from Garmin and Polar, support the form of the connection. In contrast to the Polar H7, the Polar H9 offers ANT+ as a connection possibility.
The possibility of 5kHz, also known as Gymlink, have the Polar H7 and the Polar H9. The 5kHz is, as Gymlink says, mostly used for equipment in the gym. These include, for example, treadmills or bicycle ergometers.
Waterproof
Both heart rate sensors from the comparison are waterproof. Up to 30 m both devices can be used under water
Belt
Most heart rate sensors can be adjusted in size. This is especially relevant for chest straps. For the Polar H9 the minimum belt length is 54,0 cm. The maximum length for the Polar H7 is 96,0 cm. The Polar H9 has a maximum belt length of 95,0 cm.
