A) The more you purchase, the more you save - this special offer is specifically for wholesalers, distributors or company use.

Compatibility-wise, Micro SD Cards ranging from 128MB to 512MB are suitable for small files and documents, but may be too small for storing videos or using in phones.

1) Micro SD Cards of 1GB, 2GB, and 4GB capacities feature Class 4 and Class 6 speeds, making them compatible with older phones, Android tablets, and computers.

2) Micro SD Cards of 8GB and 16GB capacities have Class 10 / U1 high-speed ratings, supporting 1080P video recording, as well as use in digital cameras, newer tablet PCs, newer cell phones, and computers.

3) Micro SD Cards of 32GB, 64GB, 128GB, 256GB, 512GB, and 1TB capacities adhere to the U3 standard, offering extremely high speeds. These larger cards additionally support 2K (1440P) and 4K (2160P) video recording, high-speed cameras, the Nintendo Switch, and DVR systems.

Regarding compatibility, these Micro SD Cards can expand the storage space for all kinds of MP3 players, computers, and laptops, as long as they have a Micro SD card slot. However, some older phones may only support up to 32GB.

In terms of speed, the Micro SD Cards of 128GB, 64GB, and 32GB capacities support 4K recording, gaming, high-speed cameras, DVR systems, and CCTV. The 8GB and 16GB cards offer U1 Class 10 high-speed performance, suitable for 1080P recording, gaming, and saving important data.

Regarding legality and quality, all Micro SD Cards of 128GB capacity are produced by a 3C Group-authorized licensee. They are manufactured using high-end NAND flash and have undergone 100% H5 testing, ensuring supreme stability.

product information: