Feature: 1. Programmable LED Cap: 16x32 dot array color LED, the content on the LED screen can be freely edited through the mobile APP, making it very suitable for outdoor concerts, baseball, bars, clubs, holiday parties, and more. 2. Detachable Screen: If you do not want to display text on the hat, you can turn off the power and use it as a regular hat. The LED screen can be disassembled for use elsewhere, convenient and practical. 3. Size Adjustment: The smart hat has a reasonable adjustment buckle at the back, allowing you to adjust the tightness of the hat according to your head circumference, making it suitable for most people. 4. Cotton Material: This LED editing hat is made of cotton fabric, which is comfortable to wear. The thickened top design is not easy to deform or collapse, and will not affect the appearance of the hat. 5. Convenient to Use: First, download the mobile APP, long press the power button to activate the LED screen, and connect to the phone hotspot. In the APP, you can input text or create your own style to attract others attention. Specification: Item Type: Programmable LED Cap Dot Array: 16x32 Dots Display Screen: Full Color Screen Cap Color: Black Screen Size: Approx. 65 x 131mm / 2.6 x 5.2in APP: For SPOTLED APP Communicating: BT Mobile APP (Support for IOS and for Android) Language: Multiple Languages (Chinese, Korean, Japanese, English, etc.) Battery: 1 x 3.7V 450mAh Polymer Lithium Battery (Built in Battery). Package List: 1 x Cap 1 x USB Cable