Button: Power Button with Fingerprint Recognition USB-C Port (Supports OTG or use as an audio jack) microSD Card Slot Built-in Dual Speakers Built-in Microphone Battery: 3,700mAh Li-ion Polymer Dimensions: 226 x 193 x 5.8 mm (8.9" x 7.6" x 0.23") Weight: Approx. 420 g (14.8 oz)
Regarding E - INK technology, for B/W spots on the screen, if their diameter does not exceed 0.5mm, they are all regarded as normal. All E - INK products comply with this industry standard. If customers are not satisfied, they can apply for return or exchange, but it cannot be regarded as a malfunction.
Select Refresh Mode to reduce ghosting: HD Mode (System Default): For reading books and other static content. Balanced Mode (Default for third-party apps in color E Ink models): For turning pages and browsing books and pictures. Fast Mode (Default for third-party apps in monochrome E Ink models): For browsing websites and other content that require scrolling. Ultrafast Mode: For video and other dynamic contents. *Regal Mode: As a refresh solution with less ghosting and better display quality especially optimized for color E Ink models.
Pen/Screen Coordination & App Compatibility: E Ink screens operate uniquely compared to LCD/OLED panels, prioritizing eye comfort over dynamic refresh rates. Most third-party apps are optimized for traditional displays, not E Ink’s slower refresh nature. This mismatch may cause latency in pen responsiveness or app rendering, but it is not a device defect—it stems from fundamental E Ink technology limitations.