Insta360 256GB UHS-III V30 A2 Microsd Card for One X/X2/X3/X4, One R/RS, Ace Pro
(Compatible with Insta360 One X. One X2, X3, X4, Ace, Ace Pro, One R, One RS, One RS 1" and Sphere. 256GB MicroSD Card. Speed Class: A2, V30. For devices that do not support UHS-1, transfer rates may vary due to interface constraints.).