📖 XTEINK X4 Pocket eReader

The system menu language can be set to English/SimplifiedChinese / Traditional Chinese / Japanese.

✅ Compatible Product

• ✅ E-Book Text Formats: TXT, EPUB, MOBI, PDF

• ✅ Comic Formats: XTC (brand proprietary comic format), PDF, EPUB

• ✅ Image Formats (lock screen / viewer): PNG, JPG(JPEG)

❌ NOT Supported: AZW3 (Kindle native), DJVU, DOCX

❌ Closed System: cannot install third-party reading apps

📦 Package Contents

• 1 × XTEINK X4 E-Paper Reader

• 1 × Matte Screen Protector (pre-applied or loose)

• 1 × Card Reader

• 2 × Magnetic Adapter Rings

• 1 × 16GB TF Card (Micro SD)

• 1 × Lanyard Cord

⚠️ No charger included. No cable included.

🔍 Product Overview

The XTEINK X4 Pocket eReader is an ultra-portable magnetic e-paper device built for distraction-free reading. Its 4.3-inch 220PPI E-ink screen uses a matte glass panel to cut glare and mimic paper — no blue light, no flicker. At just 77g and 5.9mm thick, it slips into any pocket and magnetically clips to the back of your phone via two included adapter rings, turning your phone into a dual-screen setup without notifications interrupting your book. The closed system means no pop-ups, no app installs, no distractions — just press a button and read. Supports TXT, EPUB, PDF, MOBI, plus XTC (proprietary comic format) with a fast-refresh comic engine. Wireless transfer via companion app, Micro SD expansion (16GB card included), 650mAh battery delivers up to 77 days standby. No frontlight — pair with the optional magnetic reading lamp for dark environments.

✨ Key Features

• 📄 4.3" 220PPI E-Ink: matte glass, paper-like feel, sunlight readable, no blue light.

• 🧲 Magnetic Back: sticks to phone back via adapter rings — pocket e-reader as phone "second screen".

• 🔘 Physical Buttons: full hardware page-turn, zero accidental taps, pure reading focus.

• 📚 Multi-Format: TXT / EPUB / PDF / MOBI / XTC comics; fast-refresh comic engine.

• 🔋 77-Day Standby: 650mAh, Type-C, ultra-low E-ink power draw.

• 💾 Expandable: Micro SD slot, 16GB TF card included, wireless transfer via app.

• 🌏 4 Languages: Simplified Chinese, Traditional Chinese, English, Japanese.

• 🚫 No Frontlight: designed for daytime/ambient-light reading; optional magnetic lamp available.

⚙️ Technical Specifications
💡 Usage Tips

• Phone magnet mount: stick an adapter ring on your phone case back, then the X4 snaps on — read on the subway without unlocking your phone.

• Comic reading: use XTC format for optimized panel rendering; PDF/EPUB also work but may need zooming on 4.3" screen.

• Dark reading: since no frontlight, carry the optional magnetic clip-on lamp or read under ambient light.

• Wireless transfer: install the XTEINK companion app on your phone to push books over Wi-Fi — no cable needed.

• Micro SD: swap the included 16GB card for larger capacity if you carry a big library.

• Lanyard: thread the cord through the hole for neck carry — lighter than any phone.

⚠️ Important Notes

• No frontlight / backlight: cannot read in total darkness without the optional magnetic lamp.

• Closed system: no Kindle app, no KOReader, no Android — only built-in reader.

• No AZW3 / DJVU / DOCX: convert files on PC before transferring.

• Card reader included: suggests the device may use proprietary card-swap method; confirm if standard Micro SD works in any adapter.

• 77-day standby ≠ 77 days active: standby is light-use; daily 1-hour reading yields less.

• Magnetic rings are adhesive: once stuck to phone case, repositioning may weaken adhesive.