Brand name:XTEINK Model:X4 Memory capacity:16GB Screen size:4.3 inches Screen resolution:480 × 800 pixels PPI:220 Transportation and storage:128M ColorAs shown in the figure Function: 1. Design and portability: Magnetic electronic paper, ultra lightweight, only 77 grams, not tiring to use for a long time; The 4.3-inch portable small screen is the founder of ultra portable electronic paper, which can be flipped and read after attaching a mobile phone, and can also be hung on a backpack, suitable for multiple scenarios such as commuting, outdoor camping, and high-altitude flying. 2. Display and Eye Protection: Paper like display, eye protection and durability, 220ppi high resolution, using high alumina silicon glass etching process, durability increased by 300%. 3. Battery life and durability: Supports fragmented reading for 1 week, with a button life of up to 500000 times. 4. System and Reading: Closed system, supports immersive reading, and supports TXT (UTF-8 encoding only) and EPUB format books. In this era surrounded by blue light from smartphones and glare from tablets, the XTEINK X4 e-reader brings back the purity and comfort of paper reading. It's a pocket-sized "mobile library"its ultra-compact 4.3-inch size and feather-light weight allow it to hold thousands of books, textbooks, and work documents. Students no longer need to lug heavy textbooks to class, professionals no longer need to carry stacks of reports on business trips, and reading enthusiasts can open a "new book" anytime, anywhere. It's also an "eye-protecting wonder"using a professional e-ink screen that relies on ambient light reflection for imaging, it eliminates the blue light damage of traditional screens. Whether on a park bench under the blazing sun or under a bedside lamp late at night, the text remains clear and soft, preventing eye strain and dryness even after prolonged reading, making it especially suitable for those who need to read for extended periods. The magnetic design is a major plus: simply attach it to the stand to free your hands for note-taking and research; or stick it to your desk for easy glances at reports during work breaks. Combined with its ultra-long battery life, a single charge lasts for weeks, completely freeing you from the constraints of charging cables. From students to working professionals, from reading enthusiasts to stay-at-home moms, the XTEINK X4 redefines the experience of "reading anytime, anywhere" with its portable, eye-friendly, and practical design.