Can you please explain the difference between power classes in Bluetooth?

Submitted by: Murtaza
Device Power Class, Max Output Power (mW), Max Output Power (dBm), Expected Range
Class 1, 100mW, 20dBm, 100m
Class 2, 2.5mW, 4dBm, 10m
Class 3, 1mW, 0dBm, 10cm
Submitted by: Murtaza

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