... strain. 5. bluetooth 3.0. 650mah rechargeable Lithium battery. Description1.Ultral-thin, laptop style hard keyboard, Multifunctional ... and 700mah rechargeable lithium battery. the ultra thin style of classic briefcase characterized ... keyboard, Search, Preview photo , Rotate,Doman, Alt, Copy, Paste, Cut, PrevTrack, Play/pause, Next/Track, Mute, Volume ,Volume ...