Google Pixel Buds A-Series Wireless Earbuds - WhitePixel Buds A Series have custom designed 12 mm dynamic speaker drivers that deliver rich, high quality audio. Material Type: Polypropylene. Note: If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear With a flush to ear design, three ear tip sizes, and