What's the advantage of the high-end SD card? It supports for audio, video, photo and working files.  Sharing files via APP and browser.    Wireless Sharing Simultaneously Share photos to phone, laptop and iPad.  Support for downloading files to 5 devices simultaneously.    HD Photo Transmission Transmit your photos to phones without reducing sizes and pixel.    Wireless Transmission & One Button for Share SD card with WiFi function. Allows for downloading photos and videos by your phone.    Power Saving Switch Physical WiFi share switch makes it convenient to use and save power. Avoid emit heat.    Share Photos in Time  The transmission speed has achieved Class 10. Enjoy live photos.    Wide Compatibility Support for iOS, Android and Windows systems with SDHC card slot.    Specification: Capacity: 8G/16G/32G/64G/128G/256G(optional) Transmission Speed: 1.5MB/s Wireless Standard: IEEE802.11b/g/n System Supported: for iOS, Android and Windows Application: camera with SDHC slot Item size: 3.1 * 2.3 * 0.2cm / 1.22 * 0.91 * 0.08in(L * W * H) Item weight: Approx. 1g / 0.04oz Package size: 14.6 * 9.5 * 0.9cm / 5.75 * 3.74 * 0.35in(L * W * H) Package weight: 15g / 0.53oz   Package list: 1 * SD Card