SD Type : microSDXCApplication : High Speed Read and Write,MOBILE PHONE,tablet,NOTEBOOK,Tachograph,Camera,Monitoring,Speakers,Digital Devices,Robot,UAV,File Storage,othersApplication Performance Class : A2Video Speed Class : V30UHS Level : U3Class Level : C10Package : YesRead/Write Speed : 100XType : TF / Micro SD CardBrand Name : SomnAmbuList : Mainland ChinaCertification : CE,FCC,RoHS ? High Storage Capacity :This SomnAmbulist Micro SD Card boasts a high storage capacity of 64GB, perfect for storing files, photos, and videos. ? High Speed Memory :With a read/write speed of 100X, this memory card ensures quick and efficient data transfer, enhancing your device's performance. ? Wide Compatibility :Designed for versatility, this TF/Micro SD Card is compatible with drone surveillance equipment, audio PC, and other devices that support microSDXC. ? Certified Safe :Certified RoHS compliant, this memory card is safe for use, protecting both you and your device. ? Easy to Carry :Its compact size and lightweight design make this memory card easy to carry around, perfect for on-the-go users. Capacity Description: 64GB=approximately 57GB-59GB This is the difference in calculation between the manufacturer and your PC, please google "storage product capacity" for more information. 1GB as defined by PC = 1,073,741,824,000,000 bytes, while 1GB as defined by the market = 1,000,000,000,000 bytes 100% real capacity by H2testw. Please do not use cheap card readers for testing, the speed will be reduced due to low quality readers. Product Description: Name: Memory Card Capacity: 64GB Material: Epoxy resin Speed: Read 70MB / s, write 20MB / s Applicable devices: Desktop computers, laptops, surveillance equipment, cameras, cell phones Operating temperature: - 13°F to 185°F (- 25°C to 85°C) Storage temperature: - 40°F to 185°F (- 40°C to 85°C) Size: 15*11*1mm Weight: 5.3g Package includes: 1X Memory Card Notes on use: Note actual capacity: 64GB=approximately 57GB-59GB This is a calculated difference between the manufacturer and your PC, please google "storage product capacity" for more information. 1GB as defined by PC = 1,073,741,824,000,000 bytes, while 1GB as defined by the market = 1,000,000,000,000 bytes100% true capacity by H2testw.Please do not use cheap card readers for testing, the speed will be reduced due to low quality readers.