[Noted] The USB controller will have a little buzzing sound when using the product due to their work principle.It is normal and safe.the glowing strip is energy-saving and can adjust the ambient atmosphere,suitable for use at nighttime and steady bright. | [Install] The el wire can be inserted into the space or gap of car facia and interior panels,suitable for decorating car interior such as under the door,along the dashboard trims.It also can be fixed on the surface by adhesive tape,pin,wire tack,and etc. | [Safe and Reliable] MaxLaxer el wire is equipped with a fuse in the black box controller, so that ensure the safety of use. Driving safety is guaranteed, and fashion and taste. | [Flexible and Cuttable EL Wire] El auto wire is flexible and Thin , can be bent into any shape and cut into any length. | [EL Wire Specification] Wire length 16.4ft/5m, wire diameter 0.09in/2.3mm, with 6 mm sewing edge.Voltage: 5V USB.the led electroluminescent strip kits design can be decorated garden,stage,fence,fountain, outdoor or chirstmas and other festival.