Memory capacity: 128 Gb Carrier: NAND FLASH Operating Voltage: 5V±5% Operating temperature: -5 ~ 55 °C Storage Temperature: -25 ~ 70 °C Speed: Maximum read speed up to 97 MB\/s. Standard: UHS-1 U3 V30 A1 1. UHS-1 U3 high speed, up to 97 MB\/s. 2. V30 level video speed, Compatible with 4 K HD video shooting and data transmission 3. Compatible with UAV aerial photography 4. Compatible with tachograph and wireless intelligent monitoring equipment 5. Waterproof, shockproof, high-temperature, anti-magnetic, anti-x-ray Flash memory or hard disk device manufacturers calculate the capacity in 1000 bytes, this means1 KB = 1000 bytes, 1 MB = 1000 KB, 1 GB = 1000 MB. The operating system calculates a capacity of 1024 bytes, which means1 KB = 1024 bytes, 1 MB = KB,1 GB = 1024 MB. The capacity shown after formatting will be less than the nominal capacity. System files also take up a small amount of space on different operating systems. So, it is normal that the capacity shown on the u-disk is less than the marked capacity.