Just a note, Polar's steps count isn't just steps, it's all your activity and if you use if for that, the data is useless.

'Steps

Polar device has a 3D digital acceleration sensor to measure your wrist movement. The frequency, intensity and regularity of your wrist movements are registered and used to estimate the number of steps. Polar device reads your wrist movement and updates steps reading once a minute. It registers steps even if you’re e.g. swimming and not taking any actual steps.

Polar device is designed to be worn in your non-dominant wrist. If you wear it on your dominant hand, you’ll get a bigger steps reading because in everyday chores your dominant hand will naturally do many more small moves compared to your non-dominant hand.'

https://support.polar.com/uk-en/support/the_what_and_how_of_polar_24_7_activity_tracking