portable folding ultra-thin tri-fold bluetooth wireless bluetooth keyboard with touchpad phone tablet white new

portable folding ultra-thin tri-fold bluetooth wireless bluetooth keyboard with touchpad phone tablet specifications: colors:,white material:aluminum abs keyboard open size: 304.5*97.95*8mm touchpad size:54.8*44.8mm folding size: 150.2mm [conversion: 1mm=0.03937 inch, 1inch=25.4 mm] automatic sleep function:support key number:63 keys waterproof function:no built-in rechargable lithium battery:140mah working voltage: 3.7 operating current using touch panel :<8.63ma key working curre