car LED map/book light 1:use car 12V DC power source,the plug directly put-in cigar socket. 2:use of 6pcs high light piranha LED with high luminance & soft light. 3:save energy:total current 40MA only 5:LED life time: over 10,000 hours 6:environment and safety Power on: Cigarette plug into the cigarette ignitor,and turn plug to a lock-up position Power off: Firstly press the button on plug to unlock,and then release the plug-off