Can children use the Colgate E1 Toothbrush?

The Colgate E1 Toothbrush is "designed to be used by children +6 years and adults," according to Colgate. Children between 6-7 years should be monitored by an adult when using the toothbrush. Colgate also notes that the E1 is "not for mentally or physically disabled children or adults unless they are supervised by a responsible person."