Each device has a unique serial number. You need the serial number, if you want to register your PureRadiance.
The serial number can be found underneath the replacement brush. It´s a 14 character code with no spaces. It is composed by 3 letters (T, L, A) and 11 numbers.
Note: the third character is always a number. This means that ''0'' is the number zero and not the letter ''O''.
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