8 Brush Heads Mornwell electric toothbrush comes with 8 brush heads for nearly 2 years to use. W-type Rechargeable electric toothbrush heads gently and effectively remove surface stains. The densely arranged central descaling bristles will give you teeth bright effect in just two weeks ????? Vibrating Notification ????? Built in smart timer control, 30 seconds interval reminding you to move to the next quadrant of your mouth (4 quadrants) An auto-timer powers this electric toothbrush down automatically, letting you know you've brushed for the full dentist recommended 2 minutes How long can be used after fully charge? Over 60 Days after Fully Charged. When should I change the replacement head? We use faded bristles, you should replace your toothbrush head when the white bristles turn yellow, usually 60 ~ 90 days. Is it convenient to take with you on business trips? Yes! Perfect for carrying on the go. How many replacement head in package? We provide 8pcs replacement head, each one individual packaged.