If you have those problem,we can help you solve
1.Is its brim wide enough to block sunlight?
Yes, the brim is 3.9 inches wide, providing excellent sun protection for the face and neck. Customers agree, saying the wide brim keeps them shaded from the sun.
2.How long can the battery last with a full charge?
it can last 7-9 hours for continuous
3.Is the fan noisy?
1st setting has almost no noise, and the noise increases as the wind speed increases,But the noise is less than 30 decibels
4.This solar fan can be brought on the plane?
Yes, This personal fan hat has passed the air and sea shipping report and is suitable for use as a travel hat

Solar Fan Hat, Solar Powered Fan Hat, Sombrero Para El Sol Hombre, Upf 50+ Fishing & Beach Sun Hat with Solar Powered Fans
Protect yourself from harmful UV rays with this fan wide brim sun hat. Made of comfortable and breathable material and features a wide and long brim design to prevent sunburn. It has two power modes, perfect for outdoor activities such as fishing. Stay cool and comfortable all day long

Multi-functional Fan Instructions for use
1. Red light for charging, green light for full, green light for working (the indicator light flashes from slow to fast from wind speed 1 to 3)
2. Gear function definition: single-click the button to turn on and enter gear 1, single-click the button in gear 1 to enter gear 2, single-click the button again to enter gear 3, single-click the button in gear 3 to shut down (in this cycle)
3.Multi-function fan: turn the toggle switch to BAT gear for battery drive, turn it to SUN gear for solar drive

Specification:
Material: Mesh
Brim size:12cm/4.72 inches
Cap circumference:56-60cm/22.05-23.62 inch
Cap depth:10cm/83.94 inches
Power supply: usb charging/solar charging
Battery: 800 mAh

Product List:
1*Sunshade hat
2*Solar powered fan