[DETAIL] ? High Storage Capacity : Boasting a high storage capacity of 128GB, 64GB, 32GB, this Kootion micro SD card ensures your device never runs out of space. ? Versatile Compatibility : Designed for versatility, this micro SD card is compatible with both phones and computers, making it a universal storage solution. ? Class 10 U1 Speed : With its Class 10 U1 speed, this flash memory card guarantees quick and efficient data transfer between devices. ? Compact and Portable : Its compact TF card design makes it easy to carry around, perfect for on-the-go use. ? RoHS Certified : Certified by RoHS, this product adheres to high standards of environmental friendliness, ensuring peace of mind during use. Description: 1.Micro SD Card 2.Plug and play (no software needed) 3.Micro SD + TF format,High-speed read and write 4.32GB, 64GB, 128GB Storage Size 5.Applies to Cell Phones, Cameras, MP3/MP4 Player and More device 6.Can be Used as Micro SD or SD Card 7.Operating Temperature -13o F to 185o F (-25o C to 85 o C) 8.Storage Temperature -40o F to 185o F (-40o C to 85o C) Warm Tips ( 2.0USB reader Test Result) : 16GB/32GB-Class 10-SDHC 64GB/128GB-Class 10-SDXC Class 6: Read speed around 15-20MB/S, Write speed around 6-8MB/S Class10: Read speed around 15-30MB/S, Write speed around 9-12MB/S The Micro SD card speed is based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. Micro SD card speed is greatly affected by card reader, adapter, USB port etc. Low quality device will 100% slow down card speed. Hardware Features: Original high quality flash memory Assembled in China About capacity: 16GB=approximately 14.4GB-14.8GB 32GB=approximately 28.5GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 113GB-124GB This is calculation difference between manufacturer and our PC, just for you reference. [ATTRIBUTES] - Hign-concerned Chemical: None - SD Type: microSDXC - Application: High Speed Read and Write,MOBILE PHONE,Tablet,NOTEBOOK,Tachograph,Camera,Monitoring,Speakers,Digital Devices,Robot,UAV,File Storage,others - Hign-concerned Chemical: None - SD Type: microSDXC - Application: High Speed Read and Write,MOBILE PHONE,Tablet,NOTEBOOK,Tachograph,Camera,Monitoring,Speakers,Digital Devices,Robot,UAV,File Storage,others - Application Performance Class: A1 - Video Speed Class: None - UHS Level: U1 - Class Level: C10 - Package: Yes - Type: TF / Micro SD Card - Brand Name: KOOTION - Origin: Mainland China - Certification: CE,FCC,RoHS