[comfort]: the lamp is very comfortable. Wearing for long periods of time will not feel the weight or make your neck feel uncomfortable. I often forget the existence of the lamp, which does not prevent you from doing other things. Angle adjustment: The led chandelier adopts a silicone pipe, which can be arbitrarily adjusted and bent, and different angles can be adjusted as needed. lighting mode: three mode selection, normal mode, spotlight mode, spotlight mode, 10 brightness settings, press long on the switch button to adjust the maximum brightness and the darkest brightness, adjust it to the maximum, the light flashing prompt, and there are buttons on the left and right sides to control the light independent. Color rendering index: 98 - 90 [Long standby time]: The LED lamp is equipped with a battery protection switch to prevent short circuit charging. After 3 hours of charging, it is very convenient to use soft light for more than 40 hours or strong light for more than 7 hours. range of use: the charging lamp of the neck can be used hands-free and suitable for knitting, sewing, camping, running outdoors, bedside reading, night reading, physical labor and other nighttime activities. [package included] LED*1, USB data cable*1