Dolphin Cartoon USB Flash DrivesNotice: Welcome to our store. All of our usb are of 100% true quality, we never sell false capacity. Because of the computer arithmetic and the pre-loaded system, the actual capacity is listed as below:For 8GB, it's around 7.45GBFor 16GB, it's around 14.5GBFor 32GB, it's around 29GBFor 64GB, it's around 58GB.USB 2.0 Hot Plugs & Play1. No external power required2. DO NOT pull out when copy files, because it is easy to damage, or reduce the use of time.Specifications:MaterialPVCSize25 x 63 x 18mmWeight12.5gWriting speed3-8 MB/SRead speed10-20MB/SData Retention time10 yearsWriting Cycle1000,000 timesCapacity1GB 2GB 4GB 8GB 16GB 32GB 64GBShipment:1. Delivery time is usually 3-7 working days after payment done. Exact time is depends on your quantity;2. Orders are shipped via DHL, UPS, FedEx, TNT, EMS etc, there will be tracking no to check the shipping status.