Specifications: Cotton hat, soft and breathable, comfortable to wear. With luminous LED display screen, eye-catching in the dark. Word pattern design by yourself, you can freely edit content, which supports multi-languages. Supports bluetooth-compatible connection and APP control, convenient to use. Item Name: Baseball Cap Material: Cotton + LED Charging Way: USB Charging Battery: 3.7V Lithium Polymer Battery (Included) Features: Adjustable, Comfortable, Luminous, LED Display Display Screen Length: 150mm/5.91" (Approx.) Display Screen Width: 37mm/1.46" (Approx.) Luminous Range Length: 131mm/5.16" (Approx.) Luminous Range Width: 32mm/1.26" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x LED Cap 1 x USB Cable (Others Not Included)