Start by pairing your Shapeheart heart rate sensor with Bluetooth in the iPhone settings.

This step consists first of activating the Bluetooth of your smartphone.

This step consists first of activating the Bluetooth of your smartphone.

Then select the Shapeheart heart rate sensor that appears in the detected devices.

Switch to the iPhone's Healthcare application and allow data transmission.

From the "sources" module located in the main menu at the bottom of the screen, select Nike + Run Club.

Then "Enable all categories" to allow Nike + to access health data.

Go back to the Nike Running Club application, click on the "Settings" icon at the bottom left.

Activate the heart rate display and then start your race.

Your heart rate should be displayed at the start of a race, be careful, the sensor may turn white and give the impression of turning off: on nike, this is normal, as long as you have not started a race, it is in standby.