An electric toothbrush is an effective tool to improve you oral hygiene. It's a battery-powered model and you can be sure to brush enough thanks to a built-in timer.
From Amazon
Oral-B Pulsonic Slim Clean 2000 Electric Sonic Toothbrush/Electric Toothbrush, 2 Brushing Modes for Dental Care and Healthy Gums with Timer, Gift Man/Woman, Designed by Braun, Grey
Notino
Oral B Pulsonic Slim Clean 2000 Grey sonic toothbrush