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Bigme B751C S Ebook Reader, vs OBOOK5 eBook Readers, 4.26" Glare-Free Display,

Updated August 2026 — Bigme B751C S Ebook Reader, wins on performance and display, OBOOK5 eBook Readers, 4.26" Glare-Free Display, wins on price and battery.

The Bigme B751C S offers advanced features and a larger display, while the OBOOK5 is a budget-friendly option with excellent battery life.

Why Bigme B751C S Ebook Reader, is better

Display Size

Bigme has a larger 7-inch display.

Operating System

Bigme runs on Android 14, allowing app installations.

Storage Capacity

Bigme offers 64GB internal storage compared to OBOOK's 32GB.

Why OBOOK5 eBook Readers, 4.26" Glare-Free Display, is better

Price

OBOOK5 is significantly cheaper at $89.98.

Battery Life

OBOOK5 lasts weeks on a single charge.

Sales Rank

OBOOK5 has a better sales rank at 32,994.

Overall score

Bigme B751C S Ebook Reader,
85
OBOOK5 eBook Readers, 4.26" Glare-Free Display,
70

Specifications

SpecBigme B751C S Ebook Reader,OBOOK5 eBook Readers, 4.26" Glare-Free Display,
Screen Size7 inches4.26 inches
OSAndroid 14N/A
Storage64GB32GB
Battery LifeN/AWeeks
Price$265.05$89.98

Dimension comparison

Bigme B751C S Ebook Reader,OBOOK5 eBook Readers, 4.26" Glare-Free Display,

Design and Display

The Bigme B751C S features a versatile 7-inch color e-paper display, while the OBOOK5 offers a 4.26-inch glare-free display. The Bigme's larger screen makes it suitable for more immersive reading and multitasking. The color E-ink screen enhances visual appeal, especially for graphic novels or illustrated books, making it a strong choice for users who value a rich visual experience. In contrast, OBOOK5's advanced E-paper HD screen technology, with a 219ppi resolution, ensures clear text that mimics printed paper. While both devices boast glare-free reading, the Bigme's larger display may better cater to readers looking for a more dynamic experience.

Performance and Operating System

The Bigme B751C S operates on Android 14, allowing users to install various applications, enhancing its functionality beyond a traditional e-reader. This opens up possibilities for productivity and flexibility, making it suitable for users who need more than just an e-reading device. In comparison, the OBOOK5 is designed for straightforward reading with features like fast page turns and an adjustable front light, but lacks the versatility an operating system would provide. Consequently, while the Bigme excels in performance and versatility, the OBOOK5 remains focused on delivering a simplified reading experience.

Storage and Memory

In terms of storage, the Bigme B751C S comes equipped with 64GB of internal storage and 4GB of RAM, with the option to expand storage by up to 1TB through a TF card slot. This significant storage capacity allows users to keep a vast library of ebooks, documents, and media. On the other hand, the OBOOK5 offers 32GB of storage, which is substantial but not as extensive as what the Bigme provides. For avid readers or users who intend to store large amounts of content, the Bigme's storage capabilities make it a more attractive option.

Usability and Features

The Bigme B751C S includes a stylus for note-taking, allowing users to take handwritten notes directly on ebooks and convert them to text, enhancing productivity. Its ability to transcribe audio live during lectures or meetings further adds to its functionality as a study hub. Conversely, the OBOOK5 emphasizes ease of use with its smart button feature, allowing users to navigate their library effortlessly. While both devices cater to different aspects of usability, the Bigme's features are more geared towards users looking for an integrated study and reading tool, whereas the OBOOK5 focuses on straightforward reading convenience.

Battery Life

Battery life is a crucial consideration for e-readers, and the OBOOK5 shines in this category. It boasts an impressive battery life that can last weeks on a single charge, making it ideal for travel or commutes. The Bigme B751C S does not explicitly state its battery life, leaving it uncertain how it compares in this regard. For users who prioritize long-lasting battery capabilities, the OBOOK5 offers a clear advantage, ensuring uninterrupted reading sessions without frequent charging.

Price Comparison

The Bigme B751C S is priced at $265.05, while the OBOOK5 is significantly cheaper at $89.98, making it about 66% less expensive than the Bigme. This substantial price difference may appeal to budget-conscious consumers who seek a reliable e-reader without the additional features or complexity of a more advanced device. However, for those willing to invest more for enhanced functionality and versatility, the Bigme may justify its higher price with its extensive features.

Best Seller Rankings

In terms of market performance, the OBOOK5 holds a better sales rank at 32,994 compared to the Bigme B751C S at 65,746. This indicates that the OBOOK5 is more popular among consumers, likely due to its affordability and user-friendly features. The Bigme, while offering sophisticated capabilities, may appeal more to a niche market seeking those specific functionalities. Therefore, if popularity and user preference are significant factors in your purchasing decision, the OBOOK5 may be the preferred option.

Which should you buy?

Choosing between the Bigme B751C S and the OBOOK5 ultimately depends on your reading preferences and budget. If you desire a device with advanced features, a larger display, and the versatility of an Android operating system, the Bigme B751C S is worth the investment. However, if you are looking for an economical and straightforward e-reader with long battery life and ease of use, the OBOOK5 stands out as a commendable choice. Assess your priorities in terms of features versus cost to make the best decision for your reading needs.