ship from Japan Maximum transfer speed: Read 160MB / sec Write 120MB / sec * When using a compatible reader Speed class: Class 10, U3, V30 / Application performance class: A2 Durability: Waterproof, heat resistant, X-ray resistant, magnetic resistant, drop resistant, wear resistant: (Use with drive recorder / surveillance camera is not applicable.) * There is no data loss. * And support is available only for new products sold by.co.jp. Usage: You can smoothly shoot and transfer 4K videos and a large number of photos.