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2 power supply modes: This protective helmet is not only equipped with two efficient solar panels, but can also be charged via USB. Whether for outdoor activities or everyday use, the hard hat is guaranteed to always be fully charged, leaving you with peace of mind. Strong wind: the safety helmet is equipped with 8 fans that can generate strong wind, effectively reducing the temperature of the head, so you can continue to stay cool and comfortable in the hot summer and improve work efficiency. 6-speed adjustable fan: The fans are 6-speed adjustable and have a gear memory function. Simply wait more than 5 seconds in a certain gear to keep the memory, and the helmet automatically jumps to that gear the next time you turn on. Offers you a personalized cooling experience. Multifunctional design: Our hard hat is not only a hard hat, it also has a Bluetooth radio function that allows you to enjoy music and radio anytime and anywhere without wearing additional 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 rechargeable 22,000 mAh lithium battery to provide you with a long-lasting power supply. Even with long-term use, it can maintain a long battery life without frequent charging. › See more product details; Product description 8 fans ☑ Adjustable 6-speed fan ☑ Transmission memory. 2 solar panels. Rechargeable lithium battery. 22000mAh Battery Capacity ☑ 2 air conditioners for cooling. ☑ Listen to music via Bluetooth. ☑ Radio Function ☑ High brightness headlight. SOS alarm function. Rainproof. - 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 x 330 x 150 mm. - Fan power: 1.5W x 8; Product description 8 fans ☑ Adjustable 6-speed fan ☑ Transmission memory. 2 solar panels. Rechargeable lithium battery. 22000mAh Battery Capacity ☑ 2 air conditioners for cooling. ☑ Listen to music via Bluetooth. ☑ Radio Function ☑ High brightness headlight. SOS alarm function. Rainproof. - 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 x 330 x 150 mm. - Fan power: 1.5W x 8; 8 fans ☑ Adjustable 6-speed fan ☑ Transmission memory. 2 solar panels. Rechargeable lithium battery. 22000mAh Battery Capacity ☑ 2 air conditioners for cooling. ☑ Listen to music via Bluetooth. ☑ Radio Function ☑ High brightness headlight. SOS alarm function. Rainproof. - 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 x 330 x 150 mm. - Fan power: 1.5W x 8