Frog Cartoon USB Flash DrivesAbout USB capacity:The real capacity of usb on computer is different from the said capacity from supplier because the conversion way is different between MB and GB. Computer counts on 1024 while suppliers count on 1000. So the real capacity is always less than the said capacity. Generally the real capacity is about 90% of the said capacity.For example,For 4GB, the real capacity is about 3.5-3.8 GB;For 8GB, the real capacity is about 7.2-7.6 GB;For 16gb, the real capacity is about 14.5- 15.2 GB.Specifications:MaterialPVCsize28 x 34 x 42 mmweight20gcolorgreenCharactersAnti-shock, anti-dustWriting speed3-8 MB/sReading speed10-20 MB/sWarranty3 yearsData Retention time10 yearsWriting cycles1000,000 timesShapeFrogPayment & Shipment:1. We have online order, PayPal, WU and T/T payment for your choice.2. Delivery time is usually 3-7 working days after payment done. Exact time is depends on your quantity;3. Orders are shipped via DHL, UPS, FedEx, TNT, EMS etc, there will be tracking no to check the shipping status.