(Economical Choice)Our company has over ten years manufacturing experience and good reputation in this field of ssd products, which s the product quality. Moreover, factory direct assures more er price. It's an economical choice for customers to choose our products with premium quality and best price. (3 years )We are confident with our product. So we do have a three-year . If your product was unwork, pls feel free to contact us, we will send you a new SSD instead of repairing it, we will pay for the shipping of the new SSD. (High Reliability Testing)Kingdata SSDs are 100 percent tested and approved by Kingdata Standard testing system, that is a Superior Strict and Complicated Testing System Including Electrical Tests, Temperature Competence Tests, Dormancy-Response Tests, Burn-in Tests, Character Tests and Compatibility Tests, etc. (Superior Performance)Kingdata 3D NAND SATA SSD uses 3D NAND technology , 3D NAND technology helps enable sequential read speeds up to 580MB/s and sequential write speeds up to 530MB/s for fast system boot-ups, quick application responses, and rapid transfer speeds. (Data Safety)The sata ssd product adopts original flash memory chip and has passed broad compatibility and reliability tests. With industry-leading 1.75M MTTF (Mean Time To Failure) and various error correction technologies, Kingdata ssd can protect your data safety well. Hard disk size: 64.0 GB