Do you have the following worries? Often use mobile phone to take photos or record videos, mobile phone memory is insufficient? Because mobile phones and computer interfaces are different, do you need a converter? This is a 4-in-1 flash memory. You don't need to buy more accessories, plug-and-play, because of the different interface between mobile phone and computer. It's very convenient. You can take photos at any time, keep them in flash memory, and don't waste the space of mobile phone. data is safer and protect your privacy. Three capacity options: 32GB / 64GB / 128GB (please choose your Flash capacity) Colour: Pearl Silver Size: 44mmX 40mmX8mm Working current: less than or equal to 100 mA Waiting state current: less than or equal to 30 mA Working temperature: 0 to 70 degrees Write speed: 10 to 20M/s (read and write speed varies with test platform) Reading speed: 40 to 80 M/s Working Voltage: 4.75V to 5.25V Storage temperature: - 30 to 55 degrees Packaging contents: A flash memory (please choose your Flash capacity)