LED Bluetooth Fashionable Knitted Hat

Product information:
Material: Cotton
Size: red, gray, black
Number of lamp beads: 432
Charging time: 3 hours
Usage time: 5 hours
Battery model: 602040 polymer battery
Battery capacity: 450mAh
Pixel point: 12*36
Lamp beads: 2020RGB lamp beads
Input characters: 20 Chinese characters/40 English characters
Supported languages: 10