{"product_id":"xteink-x3-ereader-3-7-e-ink-250-ppi-credit-card-sized-55g-magsafe-magnetic-back-nfc-gyroscope-wi-fi-2-4ghz-bluetooth-16gb-microsd-physical-page-turn-buttons-epub-txt","title":"Xteink X3 eReader – 3.7\" E Ink 250 PPI, Credit-Card Sized, 55g, MagSafe Magnetic Back, NFC, Gyroscope, Wi-Fi 2.4GHz, Bluetooth, 16GB MicroSD, Physical Page-Turn Buttons, EPUB TXT","description":"\u003cp\u003eSmaller than a phone. Lighter than a thought. The Xteink X3 is the most compact magnetic eReader ever made — a 3.7-inch E Ink device the size of a credit card and the weight of 55 grams that snaps to the back of an iPhone via MagSafe and goes absolutely everywhere a phone goes, without argument, without hesitation, and without adding meaningful weight or bulk to a pocket.\u003c\/p\u003e\n\u003cp\u003eThe X3 is a meaningful upgrade from the X4 in the two specifications that matter most for phone-back carry. At 55g versus the X4's 74g, the X3 is 26% lighter — a difference you feel in extended carry. The 3.7-inch display is smaller than the X4's 4.3 inches but sharper: 250 PPI versus 220 PPI — the higher pixel density compensates for the smaller screen size, keeping text clear and comfortable at the reading font sizes most users prefer. For buyers for whom the phone-back magnetic carry is the primary use case, the X3's smaller footprint means a tighter, flatter, more natural-feeling stack on the back of any iPhone.\u003c\/p\u003e\n\u003cp\u003eNew hardware in the X3 adds capabilities the X4 doesn't have. NFC enables contactless interaction — tap-to-transfer book files, future app integrations, and digital business card functionality that turns the X3 into a multi-purpose companion device beyond pure reading. The gyroscope enables motion-based interaction including the shake-to-turn-page feature — a genuinely novel interaction for reading, even if most users will prefer the physical buttons day to day. The updated button layout refines the navigation experience based on X4 user feedback.\u003c\/p\u003e\n\u003cp\u003eThe 3.7-inch E Ink display at 250 PPI renders text cleanly at comfortable sizes with the paper-like quality that makes extended reading comfortable — no backlight, no blue light, no glare in direct sunlight. Note: the X3 has no built-in front light; use in good ambient light or with the Xteink Magnetic Reading Light accessory. Books load via microSD card, Wi-Fi transfer, or the Xteink iOS\/Android app. Supports EPUB, TXT, JPG, and BMP, with 16GB microSD included and expandable to 512GB.\u003c\/p\u003e\n\u003cp\u003eOne important note on charging: the X3 charges via a magnetic pogo-pin cable rather than USB-C. The cable is included in the box and functions reliably, but it is not a universal standard — keep the included cable safe. Buyers who prefer the universality of USB-C charging should consider the X4 instead.\u003c\/p\u003e\n\u003cp\u003eBattery life reaches up to 14 days on a single charge at 1–3 hours of reading per day.\u003c\/p\u003e\n\u003cp\u003eThe X3 is the right choice for buyers who want the absolute smallest, lightest magnetic eReader that exists — for whom the phone-back carry is the priority and the credit-card footprint is the point. The X4 is the better choice for buyers who want a larger screen, USB-C charging, and a more mature software ecosystem with CrossPoint Reader support.\u003c\/p\u003e\n\u003cp\u003eBox contents: X3 eReader · Magnetic pogo-pin charging cable · MicroSD card · Screen protector · Magnetic ring stickers.\u003c\/p\u003e","brand":"LetsTango","offers":[{"title":"Space Black","offer_id":44214380888244,"sku":"XTNKX3","price":469.0,"currency_code":"AED","in_stock":true},{"title":"Frost White","offer_id":44214380921012,"sku":"XTNKX4","price":469.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0466\/3754\/7672\/files\/18901765295137_.pic_hd.jpg?v=1777621151","url":"https:\/\/www.letstango.com\/products\/xteink-x3-ereader-3-7-e-ink-250-ppi-credit-card-sized-55g-magsafe-magnetic-back-nfc-gyroscope-wi-fi-2-4ghz-bluetooth-16gb-microsd-physical-page-turn-buttons-epub-txt","provider":"LetsTango","version":"1.0","type":"link"}