The "Hidden" card features a keypad and black-and-white display for six of the digits in the card's unique number.

另外一种“隐形卡”的特色是有一个小键盘，以及显示卡号缺损数字的六位黑白显示器。

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Force time format with 2 digits display.

强迫时间格式以2数字显示。

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When the battery is replaced, the display panel sometimes shows the wrong digits. Reset the digits for correct indication.

在更换电池后，有时在显示屏上会出现错误的数字，请重新设定到正确的数字。

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It has an array of RGB LEDs on the front which it can use to display simple numerals and digits, but thanks to a bevy of sensors -- and plenty of connectivity options -- that's just the beginning.

ENGADGET: Inside Google's amazing Accessory Development Kit demo hardware (video)