Oral-B iO Manual page 19

The rechargeable toothbrush contains a radio module which
operates in the 2.4 to 2.48 GHz band with a maximum power of
1mW.
Hereby, Braun GmbH declares that the radio equipment types
3753, 3758, 3771, 3765, 3754, 3764, 3762 and 3767 are in
compliance with Directive 2014/53/EU. The full text of the EU
declaration of conformity is available at the following internet
address: www.oralb.com/ce.
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