Monster Digital USBOT-0016-A 16GB USB 3.0 Super Speed OTG Flash Drive 16GB USB and Micro USB 3.0 Flash Drive, USB 3.0 OTG/ USB 2.0 Compatible Advanced Error Correction to Ensure Data Integrity, Retractable Connectors Protects Contacts when Not in Use Static and Dynamic Wear Leveling - Adds to the Life of the Drive FAT File System for Windows and MAC Compatibility, Easy Smartphone backup and File Transfer Monsterous Guarantee: Limited Lifetime Warranty