Descriptions:

Installation: You don't need to install anything! just put them in the right place!
1.Press the little button on the back for a few seconds until the power is on.
attention : if the place nearby is too bright, then it switchs off immediately.
2.Put them in the cup place and when it is dim, the power is off.
attention : the power lasts about 15 seconds while car stays calm.
3.USD charger: it charges one hour and lasts for a few days.

Package Includes:
2 x LED Car Cup Holder Bottom Pad
1 x USB line