2 Power Supply Modes: This hard hat is not only equipped with two efficient solar panels, but can also be charged via USB. Whether it is for outdoor activities or daily use, the hard hat is guaranteed to be always fully charged, giving you peace of mind. Strong Wind: The safety helmet is equipped with 8 fans, which can generate strong wind, effectively reducing the temperature of the head, allowing you to continue to stay cool and comfortable in the hot summer, and improve work efficiency. 6-Speed Adjustable Fans: The fans are 6-speed adjustable and have a gear memory function. Just wait for more than 5 seconds in a certain gear to keep the memory, and the helmet will automatically jump to that gear the next time you turn it on. Provide you with a personalized cooling experience. Multifunctional Design: Our hard hat is not just a hard hat, it also has a Bluetooth radio function, allowing you to enjoy music and radio anytime and anywhere without wearing extra headphones. The headlight function can provide you with convenient lighting, and the SOS alarm function can help you efficiently in emergencies. Long Battery Life: This helmet is equipped with a 22,000 mAh rechargeable lithium battery to provide you with a long-lasting power supply. Even under long-term use, it can maintain a long-lasting battery life without frequent charging. ☑ 8 fans☑ 6-speed fan adjustable☑ Gear memory☑ 2 solar panels☑ Rechargeable lithium battery☑ 22000 mAh battery capacity☑ 2 air conditioners for cooling☑ Listen to music via Bluetooth☑ Radio function☑ High-brightness headlight☑ SOS alarm function☑ Rainproof function- Material: (ABS resin) Acrylonitrile Butadiene Styrene- Input voltage: 5V/1-2A- Output voltage: 5V/1-2A- Bluetooth model: V5.0- LED power: 3W- Hat size: 220*330*150mm- Fan power: 1.5W*8