Product Name: Topfine USB Kiribati Custom Made Ring metal USB Flash Drive 4GB 8GB 16GB 32GB 64GB Model NO.: TF-1040 Security Check: Support Security Check Function: Storage USB Disk Color: Black, White, Red, Blue, Green, Pink, Orange USB Type: Creative USB Disk Open Style: Opening Material: metal Interface Type: USB 2.0 & USB 1.1 Storage Capacity: 128MB-64GB Capacity: 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB Certification: RoHS, CE, FCC Trademark: OEM, ODM Transport Package: Poly Bag, PP Box, Paper Box, Blister, Tin Box Specification: CE, FCC, Rohs, SGS Origin: China HS Code: 8523511000 Product Description metal Pen Drive 3.0 PenDrive 32GB 16GB 8GB 4GB High Speed Usb Flash Drive 128GB Key usb Stick 64gb flash memory Usb Flash Disk2.Specification n:1. Support USB version n 2.0 and 1.02. Hot Plug & Play3. Storage status s & oagudo; lido4. No external power 4.5 V ~ 5.5 V from USB port is required5. Support Win98 / ME / 2000 / XP / Vista / 7, mac OS 9.X / Linux2.4 without device drive6. solution n support for Linux kernel versi & oagudo; No 2.4 or version; n later7. nonsense for OS 9X or above8. Compatible with USB 1.1 / 2.09. Working temperature: -10 to + 55Deg. CReal capacidad4 GB = aproximadamente 3,75 GB-3,9 GB8 GB = aproximadamente 7,4 GB-7,85 GB16 GB = aproximadamente 14,2 GB-15,8 GB32 GB = aproximadamente 28,2 GB-30 GB64 GB = approximately 58 GB-60 GB128 GB =Approximately110 GB-120 GB