Auto power off and low power draw for very long battery life.

自动关机和低功耗非常长的电池寿命。

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Automatic sleep mode for long battery life, low battery indicator.

延长电池寿命自动睡眠模式，低电量显示。

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Display technology: Readers of electronic books must choose between long battery life or vibrant, living colour.

显示技术：是要电池寿命长还是要色彩鲜明生动，电子书阅读器须二中取一。

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Long battery life, easy on the eyes, the Kindle is good for one thing books.

FORBES: Apple's iPad Is No Kindle Killer

This year's Windows RT-based release shares many commonalities with last year's winner, including very long battery life.

ENGADGET: Switched On: The 2012 Switchies, Part 1

The impossibly slim, sub-three-pound design is a huge boon, as is its long battery life and fast performance.

ENGADGET: ASUS Zenbook Prime UX31A Ultrabook review: a high-res display, and a much-improved keyboard