Name: LED display hat
Material: 100% cotton + LED
Gross weight: 146g (including USB cable and manual)
Display size: 123*23mm
Lighting area: 100*14m
Pixel: 36*5
Hat circumference: 58-60cm
Hat size: 26*20*11cm
Power connection: USB charging
Battery: 450mAh
Charging time: 3 hours
Use time: 8 hours
Voltage: 3.7V
Display content: English text/symbol/number/fixed mode
Operation mode: mobile APP