Google Pixel Buds A-Series - WhiteTrue Wireless Built In Microphone Water Resistant With custom designed 12 mm dynamic speaker drivers, Pixel Buds A Series deliver high quality audio. Adaptive Sound adjusts the volume as you move between quiet and noisy environments, so you dont have to With a flush to ear design, three eartip sizes, and a stabilizer arc, they stay in place and create a gentle seal for amazing sound.