YATUO DIY E-Ink Phone Case for iPhone13 / iPhone14 APP Operation Smart Photo Rear Projection Customiza Phone Case Instantly Display Photos On The Ink Screen Back Cover Personalize Your Phone case

【SAFE TO USE AND NON-CONSUMING】 No built-in battery, no need to worry about overheating, no need to worry about damage, just use NFC transmission through the APP, even if the phone is turned off or the case is removed, the image will remain displayed for a long time. 【CUTTING-EDGE TECHNOLOGY】 The projected images can only display black, white, and red colors, but through some clever dithering techniques and varying levels of color intensity, it simulates full-color effects. 【INFINITE CREATIVE POSSIBILITIES】 If you have creative inspiration or are proficient in using AI drawing apps, it will ignite your desire to showcase your work. 【WIDE RANGE OF APPLICATIONS】 This product has a wide range of applications, and you can simply operate it on the app without the need to send information to others, so you don't have to worry about privacy leaks. 【EASY TO USE】 The app is easy to use, yet powerful enough to allow you to perform magic on the go. It's like constantly changing to a new phone case 【PERFECT FIT】 This case passes drop test, and the precise opening design allows easy access to all buttons, speakers and charger slots. Provides a delicate touch and non-slip grip. 【Check your phone model】 Before ordering, please go to Settings > General > About > Model Name to confirm your phone model.