Key Specifications/Special Features:* Compliant with SD 3.0, 2.0 & 1.1 Standards* Form factors: microSD (Normal Speed) / microSDHC (High Speed) / MicroSDXC (Ultra High Speed: UHS-I or UHS-II)* Capacities Available: 4GB â 256GB* Video Speed: C4 / C6 / C10, U1, U3, V30, A1* Flash Type: Single Level (SLC) Multi-Level (MLC) & Triple Level /span> ( TLC)* Write speeds up to 100 MB/s, it is Class/Flash-type/Capacity dependent* Operating Voltage: 2.7V - 3.6V* Certifications: CE, FCC, RoHS* microSDHC and microSDXC Logos are trademarks of SD-3C, LLC. Digilux has been dedicated to NAND flash-based storage solutions in Taiwan for 15 years. We deliver only Legal OEM cards & Genuine original branded memory cards.We specialize in customizing our storage products to match the unique needs of each application, including package customization, content loading, building industrial-grade for extreme conditions and more!* Customized environmental, electrical, mechanical and/or test specifications* Your name and logo on SD, microSD & CF Memory Cards, or USB Drives* Available in bulk or retail packaging* Reasonable MOQs * Provide your artwork, or we can work w. you to create an original custom design* Full range of capacities and speeds available* Lots of packaging options to choose from, including multi-packs.