ZARMST 5 YEAR WARRANTY - All of 128gb ZARMST Pen Drives have been rigorously tested and formatted before leaving the factory. And we provide 5 Years warranty service. Questions will be responded to within 24 hours. APP FOR EASY FILE MANAGEMENT - Easily manage files on your IOS device with the easyflash pro app, it allows you view, access and back up all the files in your phone's memory in one place, available in the App Store. One-click back-up albums and address book, and encrypted files function are all included. ULTIMATE COMPATIBILITY - One end is USB Type C interface and a 3 in 1 interface on the other, which is not only for most IOS devices (such as iPhone, iPad, Macbook) Android devices (Type C or Old Style Micro USB models), but also all kinds of traditional USB interface devices (laptops, tablets, TV’s, car audio systems, and more), lets you easily transfer files back and forth between different devices. HIGH SPEED TRANSMISSION CHIP - ZARMST Memory Stick provides an easy and fast way to transfer all kinds of files. Up to 80M/S Read and 30M/S Write Speeds. ZARMST allows you to release the memory on your storage device offline without a data cable or cloud.(Performance may vary based on host device, interface, usage conditions, and other factors). 128GB 4 IN 1 PHOTO STICK - High quality aluminum frosted ZARMST usb c flash drive comes in a true 4 IN 1 Design, it has 4 built-in ports (USB-C, iPhone Port, Micro USB and Standard USB A Connector) with no additional adapters to make it more stable.