Digital Phone Case for iPhone 16 Pro Max – 4.0" HD E Ink Phone Case with NFC, Smart Ink Phone Case for DIY Photo Display & Changing Picture, Customizable E-Paper Phone Case – Black

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• 【4.0" HD 4-Color E Ink Screen】This e ink phone case features a 4.0" 556×800 HD display with four colors (black/white/red/yellow), delivering sharper text and richer gradients than traditional 3‑color models. It turns the back of your phone into a mini canvas for photos, AI artwork, and custom designs
• 【NFC Zero-Power Digital Phone Case】Update your design in seconds with NFC—no Bluetooth, WiFi, or charging needed. Once an image is transferred, the smart ink phone case holds it with 0% power consumption, even if your phone is off or the case is removed, making it a truly energy‑efficient digital phone case
• 【Changing Picture Phone Case, No Extra Cases Needed】Use the companion app to switch images anytime and match your mood, outfit, or event. Turn your phone into a changing picture phone case for photos, QR codes, schedules, or branding without buying multiple cases or wasting materials
• 【Slim, Protective, and Comfortable】Made from shock‑absorbing TPU with raised edges around the screen and camera, this eink phone case provides 360° daily protection. Precise cutouts, responsive buttons, and a non‑slip grip keep your phone safe and comfortable to hold without adding unnecessary bulk
• 【Simple App Control & Privacy Friendly】Just attach the nfc phone case, scan the QR code in the manual, and follow the prompts to sync. The app lets you crop, adjust, and edit images or text locally on your phone—no cloud uploads or account required—so your personal designs stay private while your e ink phone case shows off your style