About led screen upside down: Our led screen supports 90, 180, and 360 rotation angles. Use of the hat : For the party hat, you need to scan the QR code on the instruction manual, download the "SPOTLED" APP (the APP is free to download and use), then turn on the Bluetooth and enter the APP to connect the hat. When the LED display flashes once, the connection is successful. When you select a pattern, the LED screen will be displayed simultaneously. DIY Painting : The party hat has 576 small light beads, 4 colors, can display more than 200 patterns, all patterns can be flipped at 90, 180, 270, and 360. He can display text, pictures, music (there is no microphone installed in the hat, the LED hat will show the rhythm of the music), animation, and can be DIY, you can design patterns and save them, show your highlights and attract attention. You are not only the user of the LED screens but also the creator of LED screen animation. Wide Applications : The hats are very suitable for outdoor concerts, baseball, carnival, Christmas, bars, clubs, festivals, Halloween, hip hop, costume parties, etc. The LED cap is made of cotton cap + LED display, and the LED display is inside the cap. If you don't want the LED on, you can turn it off and use it as a normal hat. The hat is rechargeable and suitable for all occasions. Note: Please charge the hat before use. It needs to be charged with a USB charger. It has a built-in 450mAh aluminum-ion battery, which takes 2-3 hours to fully charge and can be used for 6-10 hours.