# Xteink X4 Pro Pocket E-Reader for $99 at Amazon Canonical page: https://savlume.com/items/xteink-x4-pro-reader-amazon--j8h1nbqm7gd2z6fdo2hbx8l2p Publisher: Savlume Published on Savlume: 2026-11-08T16:16:35.672Z Content updated: 2026-11-08T16:17:29.550Z Source publication time: 2026-11-08T16:00:00.000Z Offer status: Unverified The Gadgeteer reports that the ultra-compact Xteink X4 Pro e-reader is listed for $99 at Amazon. Measuring roughly credit card size with a 4.3-inch E Ink touchscreen, physical buttons, and an adjustable front light, the 72-gram device is designed for lightweight, one-handed reading. Files transfer via Wi-Fi or USB onto an included 16GB microSD card. However, file support is limited to DRM-free EPUB and TXT formats, charging requires an included magnetic pogo pin adapter rather than standard USB-C, and checkout shipping and taxes are not specified. ## Media review The Gadgeteer presents the X4 Pro as a compact reader suited to short reading sessions, especially for EPUB readers who want a front light and one-handed controls; its small screen and limited document formats are significant trade-offs. Attribution: The Gadgeteer AI-assisted summary of source text, not a Savlume hands-on test. - Source-reported strength: The article highlights the credit-card-sized 72-gram body as easy to carry in a pocket. - Source-reported strength: An adjustable front light, touchscreen, and physical buttons give readers lighting and page-turn options. - Source-reported strength: The article describes app-based Wi-Fi transfers and direct USB file copying as available ways to load books. - Source-reported limitation: The 4.3-inch screen is described as unsuitable for long PDF sessions or comics. - Source-reported limitation: The article says DRM-locked purchases will not open and documents are limited to EPUB and TXT. - Source-reported limitation: Charging uses a pogo-pin connection rather than USB-C. ### Which document formats does the article say it supports? EPUB and TXT. ### How can books be transferred to the reader? The article describes transfer through the Xteink app over Wi-Fi or by USB from a computer. ### What is included for storage? The article says a 16 GB microSD card is included and expansion supports up to 256 GB. ## Evidence and sources Source report only. Merchant price, availability, seller, and conditions have not been independently confirmed. Last attempted check: Not recorded Last successful verification: Not recorded The Gadgeteer: https://the-gadgeteer.com/2026/11/08/xteink-x4-pro-credit-card-sized-e-reader-front-light/ Purchase destination: https://www.amazon.com/dp/B0H6FPNTFM?tag=savlume-20 AI-assisted summary of cited source material. Not a hands-on review. Prices and availability can change.