About this item ?ADJUSTABLE BRIGHTNESS: Our happy birthday neon sign comes with dimmer switch.The bottom button controls the switch, and the up and down buttons can adjust the brightness (10%-100%). When you turn it off and then turn it on again, the smart neon light will return to the previous state without pressing a button. 180cm (71in) USB power cord+a 45cm metal chain. NOTE: Neon happy birthday sign size approx 16.5''x 12''(42*30cm), please confirm our product size matches your background decoration. ?REUSABLE & DURABLE: The new LED happy birthday light up sign for party are made of silicone tubes and acrylic backboard. As a fantastic alternative to the old-style glass neon signs, party neon light sign is brighter, safer,more durable, energy-saving, no noise,the LED neon tubes do not heat up so they are safe to touch. Powered by USB cord,can be lit via an adapter, power bank or computer. ?MORE BRIGHTER, LIGHT UP YOUR PARTY: Great neon Happy Birthday sign for anyone's birthday. Celebrate this big day with this gorgeous Happy Birthday led sign, this Happy Birthday neon light sign provides impact and emotional atmosphere for your important activities, such as home decor or party. ?WIDELY APPLICATION: Happy birthday sign neon light is widely used in any birthday party, family birthday party, children's birthday party. It is an indispensable decoration for party decoration, which can be hung or placed directly. It can be also used as a night light in a dark environment to brighten dark room, the warm white color light is bright and not dazzling! ?EASY TO INSTALL: The neon signs have pre-drilled holes,chains and fixing screws. It's super easy to install and move around. Simply hang the neon birthday sign on a greenery wall or balloon backdrop and plug in -This sign adds the perfect touch to any arrangement or simple backdrop. Note：Please remove the coating from the acrylic board so that the background will become transparent. › See more product details