eService Digital PocketInk 3.7

 

eService Digital

PocketInk 3.7

 

The palm-size E-Ink companion that does far more than read.

 

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1 | Ultra-portable design, true paper feel

 

Smaller than a deck of cards and just 9 mm thin, PocketInk 3.7 tucks beside your phone yet unfolds entire novels on its 3.7-inch Carta-class ink panel. At < 60 g you’ll forget it’s in your pocket—until the next queue, commute, or campsite break begs for a chapter.

 

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2 | Read without limits

 

Capability	Why it matters
EPUB & TXT, full-unicode	Drop books straight on—no conversion dances.
Custom type engine	Choose font family, point size, spacing, margins; rotate to any orientation.
Smart navigation	0–100 % progress jump, chapter picker, auto-scroll, landscape split view.
Silent “10 M-cycle” page keys	Zero click for midnight binge-reads or library stealth.
Boss Key	One tap hides pages behind a clock—instant discretion at the office.

Your place in every book is stored independently, so hopping among manuals, manga and epics feels seamless.

 

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3 | Tri-edition power choices

 

Edition	Back-light	Battery	Runtime (typ.)
Lite	—	1 200 mAh	up to 15 days reading / clock standby
Glow	Adjustable white	1 500 mAh	up to 12 days mixed use
Enduro Glow+	Adjustable white	2 500 mAh (adds 2 mm thickness)	up to 28 days pure reading

All models charge via USB-C and top off in ≈ 90 min. Glow & Glow+ let you dial warmth from white-on-black “bed-mode” to crisp daylight.

 

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4 | More than an e-reader—your

everyday info slate

 

 

• Offline clock & calendar – dedicated RTC keeps perfect time, even unplugged for weeks.

• Weather Hub – county-level forecast (today + 48 h) with temp/humidity pulled via Wi-Fi; doubles as a bedside display.

• Tomato Timer – configurable Pomodoro cycles with gentle alert vibration or chime.

• Multi-alarm system – up to five schedules; choose work-day repeat or once-off.

• Learning Suite – flash-card vocab & poetry drills you can upload in CSV.

• Image Frame – cycle 8-bit BMP illustrations or manga strips; OTA soon to add PNG/WEBP.

• Music Pocket – Bluetooth 5.0 audio for MP3/WAV/AAC/low-bit FLAC; read and listen simultaneously.

 

 

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5 | Always evolving:

OTA firmware

 

PocketInk runs on an ESP-Series MCU with 16 MB flash. Connect to Wi-Fi, tap System → Update, and new features—UTF-16/32 text, new image formats, UI skins—arrive without cables or computers.

 

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6 | Precise craftsmanship

 

 

• One-piece ESUN advanced polymer shell: hand-polished, matte-white, never yellows.

• Reinforced mid-frame protects the delicate ink glass; every unit endures 48 h burn-in.

• Tactile micro-dimple back resists slips yet feels silky in the hand.

 

 

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7 | Tech sheet

 

Item	Spec
Display	3.7″ E-Ink, 800 × 480 (255 ppi), 16-level gray
Lighting	None (Lite) • Adj. front-light (Glow, Glow+)
CPU / RAM	ESP32 dual-core @ 240 MHz • 8 MB PSRAM
Storage	16 GB on-board (≈ 12 GB user), USB-C OTG thumb-drive support
Connectivity	2.4 GHz Wi-Fi, Bluetooth 5.0 (A2DP)
Sensors	High-precision temp ±0.3 °C & humidity ±2 % RH
Audio	BLE ear-/head-phone output, system beeper
Buttons	Page ↑, Page ↓, Home/Boss, Power; 10 million-cycle silent tact switches
Battery	1 200 / 1 500 / 2 500 mAh Li-ion (USB-C 5 V-1 A)
Dimensions	94 × 68 × 9 mm (Lite/Glow) • 94 × 68 × 11 mm (Glow+)
Weight	58 g / 59 g / 63 g
Materials	ESUN polymer shell • Gorilla-class front glass
Certifications	CE • RoHS • FCC

 

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8 | In the eService Digital box

 

 

1. PocketInk 3.7 reader (edition of choice)

2. Braided USB-C charge & OTG cable

3. Clip-on lanyard strap

4. Quick-start leaflet & QR for full manual

5. eService Care 12-month warranty + 50 % discount voucher for replacement battery (year 3)

 

 

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9 | Who will love PocketInk?

 

 

• Students & commuters – slip lecture PDFs, flash-cards, and novels into any jeans pocket.

• Field techs & anglers – weather + tide charts in daylight-readable ink, 28-day battery.

• Focus hackers – silent buttons, Pomodoro timer, boss-key clock keep you deep-work ready.

• Minimalist desk junkies – perpetual calendar and e-paper photo frame in one elegant slab.

 

 

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10 | The eService Digital advantage

 

 

• Advance-swap support – if your reader falters in year 1, we ship a replacement first.

• Firmware roadmap – UTF-16/32, PNG art mode, and Goodreads sync already on the 2026 schedule.

• Community resources – open template packs, custom fonts, and scripting examples in our GitLab.

 

 

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PocketInk 3.7 — read, learn, track, and chill anywhere.

Slip it beside your phone and carry a library, planner, and weather station—always on, never glaring—in the tiniest e-paper form we’ve ever built.

Available now in Cloud White (Lite/Glow) and Graphite Grey (Glow+). Add to cart and join the pocket-reading revolution.