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While thumb-typing or finger-swiping on your smartphone screen may be good enough for tweeting or texting, more wordy activities -- like typing long email messages, taking notes at conference sessions or writing documents like this one -- are grueling at best. For that, you need a physical keyboard. Universal Foldable Keyboard is the perfect travel companion—its ultra-thin, lightweight, compact design lets you easily take it wherever you go so you can get more done on your tablet or smartphone no matter where you are. Specification: Product demension: 11.89 x 3.82 x 0.31 inch Touchpad demension: 2.16 x 1.76 inch Keyboard weight: 200 g Keyboard layout: 63 keys Transmission distance : up to 33feet Capacity of lithium battery: 140 mAH Working voltage: 3.7V Sleep time: 10 min (press any key to wake it up)