iReader Ocean4 Turbo

1. Core functions and features

(1) Screen and display

• 7-inch E Ink Carta1200/1300 screen (may be upgraded to Carta1300 in 2025)
• Resolution: 300 PPI (HD display, close to the texture of paper books)
• ComforLight Pro gradient reading light: 30 levels of brightness + 30 levels of color temperature adjustment, adapting to different light environments.
• i-Clean instant clear technology: eliminates 99.99% of afterimages in dark mode and reduces page turning flicker
• Anti-glare design: Nano-etching process reduces 95% of interference light, suitable for outdoor reading.

(2) Performance and storage

• 2.0GHz quad-core processor + 4GB RAM, running smoothly.
• 64GB storage (not expandable), can store thousands of books.
• i-Display 2.0 independent display fast refresh: up to 30 frames/s refresh rate, suitable for comics and PDF reading.

(3) Battery life and charging

• 2000mAh battery, official nominal: Reading time: 39-49 hours (actual test varies depending on usage mode) Standby time: 16-20 days.
• USB-C charging, compatible with mainstream chargers.

(4) System and software

• SmartOS 2.3 (supports app store, can install third-party apps such as WeChat Reading and Zhihu).
• File format support: EPUB, PDF, TXT, MOBI, etc.
• Note function: supports handwritten annotations, which can be exported as e-books.
• AI reading: supports AI voice for Chinese and English books (requires Bluetooth headset, the device itself has no speakers).

(5) Design and grip

• Weight: 179g (lightweight design, more portable than mobile phones).
• Thickness: 4mm (thinnest part) - 7.8mm (thickest part).
• Ergonomics 2.0: rounded frame, comfortable to hold with one hand.
• Anti-fingerprint back panel, not easy to get stained.

2. Applicable scenarios

• In-depth reading: 300PPI high-definition screen + eye protection backlight, suitable for long-term reading of novels and documents.
• Outdoor/commuting: anti-glare + lightweight body, suitable for reading on subways and buses.
• Study/office: PDF annotation + note export, suitable for students and researchers.
• Night reading: dark mode + cold and warm light adjustment to reduce blue light damage.

Advantages

• Light and thin: 7-inch screen-to-body ratio, 4mm at the thinnest point, 7.8mm at the thickest point, weighing 179 grams, suitable for carrying around

• Excellent display: 300PPI high-definition screen + afterimage optimization, reading experience close to paper books

• Open system: supports WeChat Reading, Zhihu and other APPs, rich resources

• Lightweight and long battery life: 179g + ultra-long standby, suitable for travel

• Humanized design: anti-fingerprint back panel + ergonomic grip to improve comfort

• Anti-glare: Nano-etching process, reducing 95% of interference light

• Refresh rate: i-Display 2.0 independent display fast refresh, up to 30 frames/s

• i-Clean instant clear technology: optimize afterimage control, 99.99% of afterimage can be eliminated in dark mode

• Gravity sensor: automatically rotate the screen to adapt to left and right hand grip

• Grip optimization: arc corners + ergonomics 2.0 Design, 7mm arc frame, improves the comfort of one-handed holding, and the grip side fits the hand better

Disadvantages

• Higher price: starting from 1599 yuan, slightly more expensive than the entry-level Kindle.

Summary

iReader Ocean4 Turbo is a high-performance ink screen reader, focusing on eye protection display + open system, suitable for heavy reading users. Compared with Kindle, it has more advantages in refresh rate, afterimage control, and third-party APP support, but the price is slightly higher.

Recommended group:

• Students and office workers who need to read for a long time.
• Users who like open systems (WeChat Reading, etc.).
• Readers who are sensitive to afterimages and pursue a smooth page turning experience.

Comparison of competing products:

• Kindle Paperwhite: closed system, but mature ecology.
• Kobo Libra 2: supports Bluetooth, but there are fewer domestic resources.