What size batteries does Buzzy® take? How do you replace the batteries?
Buzzy® is powered by 2 alkaline AAA batteries that will last at full strength for about 20 hours. For optimal operation, replace batteries when vibration weakens. When battery power is getting low, Buzzy will emit short spurts of vibration upon initial activation. Refreshing your Buzzy with new batteries is easy! Unscrew the back using a Philips head screwdriver. Remove the back panel, then carefully remove batteries. Replace with 2 alkaline AAA batteries. If Buzzy is not being used for an extended period of time, remove batteries for storage.