Just control the tightness of the paper roll, the brightness of the lamp can be adjusted flexibly.(Photo: Designboom.)
In addition, the LED system can also change colors when users change the tightness of paper rolls. When the roll is gently rolled, the light will gradually turn to white (cool color) and when the light is coiled, the light will gradually turn yellow (warm color).
Smart Paper-torch is a perfect device to carry around with you because of its small size and can spread flat when needed.