1140C: with a USB cable， behind four USB ports， (USB cable can be connected to the power supply connector need to purchase a) (figure below describes the B section)?

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1140A: (only install battery) (can be?connected to the supply， the need to buy their own power supply) (The following diagram describes the A section)

Alarm Dimensions: Length 10.6 * 5 * 6 cm thick?

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Message board Size: 14 * 9.8 cm wide?

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Screen size: 7.5 cm long， 2.1 cm wide?

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Color: The color of the backlight， blue， green， optional?

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Watches complexion: White?

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Tip: When using an external power supply， clock and message board is a long bright background light; If the battery when the product will have a backlight operation， if there is no operation for 10 seconds， then automatically turn off.

Main features: date， time， temperature display can be switched or slideshow， 12 hours or 24 hours format selection， Celsius or Fahrenheit selectable， 3 groups of timing alarm clock and snooze function， birthday celebration， is timing and countdown， 16 world music appreciation， 2000-2099 calendar queries.