Airpods pro 4 case size July 8, 2019 16 32 64 128 Airpods pro 4 case size comparison Airpods 4 case size vs airpods pro Airpods 4 vs airpods pro 2 case size Airpods pro 4 case Airpods pro 4 cover Airpods pro 4 vs airpods 3 Airpods pro 4 black Airpods pro 4 original vs fake