Lenovo 64GB TF Card High-speed SD Card A1 U3 C10 Speed Level up to 100MB/s Read Speed for Phone Tablet Monitoring Device Features: The A1 performance standard enables you to quickly start and run programs for a better smart device experience. Full speed record hd pictures without missing frames, clearly record every moment, faster and more stable transmission speed. Select the best storage particles, strictly ensure the stability and flow of storage, and ensure the service life of memory card. Support mobile phone expansion, efficient and stable. Temperature-proof, shockproof, vibration-proof, and X-ray-proof. Widely compatible with mobile phone, tablet, computer, camera, UAV, dash cam, monitoring device, etc. Specification: Type: TF card Brand: Lenovo Capacity: 32GB/64GB/128GB/256GB/512GB(optional) Speed level: Class 10, A1, U1(32GB); Class 10, A1, U3(64GB-512GB) Read Speed: Up to 90MB/s(32GB), Up to 100MB/s(64GB-512GB) Item size: 1.5 * 1.1 * 0.1cm /0.59 * 0.43 * 0.04in Packing list: 1 * TF card