Best Match US $ 5.87 /piece US $ 2.74 /piece US $ 1.20 /piece US $ 12.00 /piece US $ 4.00 /piece US $ 2.22 /piece US $ 14.50 /piece US $ 63.00 /piece 1.Capacity 16GB = approximately 14GB-15GB 32GB = approximately 28GB-30GB 64GB = approximately 58GB-60GB 128GB = approximately 119GB-120GB 256GB = approximately 224GB-240GB This is calculation difference between manufacturer and your PC, please Google ‘Memory card capacity’ to get more information. Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes.The pursuit of the perfect person is not recommended to buy. 2.Speed Test (1).The speed show on our link is test by Sandisk/Samsung or by our professional instrument, you’d better use 3.0 interface and 3.0 card reader, then you can get a nice speed. (2).Speed is influenced by many different factors, interface, computer condition , test software,systems,use, etc . (3). Under normal circumstances, due to computer configuration, USB interface, card reader interface, card socket interface and other factors, it will affect the reading speed of the product, the good configured computer can reach 60-90% speed (for example, 100M can reach 60-90M) , but the computer with poor computer configuration can only reach 10-30% speed (for example, 100M can only reach 10-30M), it depends on the configuration of your device. (4).We can 100% promise that our product are all 100% original, there is a security verification label on each package. (5). Once you place your order, it mean you had read and agree with my description. 3. Package If you choose the Accessories (Card Reader/ USB Adapter/ SSD Adapter/other), The number of Accessories is just 1, if you want more Accessories, you can buy another on my store. (Accessories’ pics see follow) *Due to long-distance transportation, some products will change the packaging, but we promise the integrity of our packaging products themselves 4. Official Authorization We are official authorized seller, All of our products are original and genuine, can be verified on official website. 1. Shipping Way 1).We use AliExpress Standard Shipping,China Post Registered Air Mail,ePacket or other. About these logistic way, you need go to local Post Office to take your item. If you always don’t go to the Post Office to take it, it will show “undelivered”, then the item will be return back to us. (Your Local Post Office will inform you when your item arrive) 2).If you like other shipment, you can contact us to change the logistics. 3).We will send tracking number to you when we ship your item. 2. On-time Delivery Time 1. Shipping time: You can see the specific time of logistic shipping when you choose the logistic way. 2. Promised to arrive time: within 60 days(Brazil 90 days) 3. Time will be affected by special holidays and transportation environment 1. Note for the delivery 1. Long international shipping will damage and crush the package, if you found there is unpacking signs, please do not sign for. Outer Package in good condition, but the product retail package by extrusion deformation, but does not affect the product use, is normal. 2. if your Confirmation Time is coming,and still do not receive the goods,please contact with us to extend the delivery date. 2. Refund and Return 1. Cannot receive the item: (1).More than 60 days(Brazil 90 days) — refund all money (The premise is that you need open a dispute and choose “shipping method way not as described”, then we will refund all money.) (2).The premise is that you need to go to the local post office to take your item. 2. Items are damaged when you take: (1). There is unpacking signs — do not sign for, return the item, then we refund all money, return fee we pay (Please do not sign for, otherwise you need pay the return fee by yourself.) (2).Item are damaged when you open the package — return the item, then we refund all money, return fee we pay (You need give us video and pics of unpacking process to prove your problem, otherwise we cannot accept your problem. and we will bear less than $3 for the return of the logistics costs) 3. Warranty: (1).Quality issues — return the item, then we refund all money, Return fee customer pay (If it is man-made damage, no warranty.) (2). Not satisfied with the item — not refund or you return the item, then we refund all money, return fee customer pay (3). Adapter or Card reader damage — not refund (Adapter and reader are free, not warranty, if they need pay money to buy, we just refund you the same price you pay.) 4. Need know: (1).Return item must ensure the integrity of the goods, otherwise we will not accept the return. (2).When we get the item back, then we will refund money. (3).If you insist open dispute, you can choose “Personal reasons”, “easy return”, “shipping method was not as described”. then we will can help you to get your money back easily.