Product Description：
Function Description:

1> Attractive/ fancy apperance,transparent acrylic shell with crystal effect
2> 5.0 USB & DC 5.0V interface to connect the external power 
supply（can be used together with power bank) 
3> Can use lithium battery when no power supply outside
4> Small outline size,delicate and tiny,easy to carry and can put into pocket
5> With a work light and buzzer, easy to use and user operate friendly

4.2" inch DEMO Kit Basic Parameters：
Outline Size:170.00x100.00x2.20
View Area:84.86x63.6
Pixels:400x300
DPI:120