... switch, convenient use, flat type design, can be clamped in screen, keyboard,, ISBN, hats and other ... Very space- ... a head for the 5.5/2.1mm diameter (in line with the at present most fishing lamp charging ... the power to use, can also be used in No. seven dry batteries.Small beautiful appearance, very popular with ... use how you can use, when not in use can be put in the pocket, very convenient. Is out ...