Personalize your pictures with HP Sprocket 3x4 Portable Printer. Download the HP Sprocket app on your smartphone and customize your photos before you take them to the mini photo printer. Create fun, vibrant, and colorful prints using borders, stickers, and more on the mini printer photo-editing app. With the features of this portable photo printer, you can share your eye-popping images on social media or spread your 3.5” x 4.25” prints to friends and family. With Zink paper in your pocket printer, your photos produce vivid color without the need for ink. Make your photos your own then print them out on water-resistant, tear-resistant, and sticky-backed Zink paper. The portable design of this phone photo printer allows you to capture and print out fantastic moments anywhere you go. Snap beautiful photos on vacation, during holidays, and at parties, then get gorgeous, clear prints of bright smiling faces instantly with the HP Sprocket 3x4 Instant Printer.