I have the cross action brush battery operated how can I change the brush head???

I really like this toothbrush, but it is impossible to find brush refills for it.

I bought the battery toothbrush yesterday, the handle says timer , how does that work ?

I have not been able to unscrew it to replace the batteries. HELP

I just bought this today. When I turned it on, it won’t stop unless I remove the battery.

Does the job. But used to come with a plastic head cover. Guess they've become too cheap for that.

Great toothbrush, my teeth feel much cleaner than manual brushing. 2 minute timer is handy.