Waist-mounted fan: 3-second full-body cooling, can lower perceived temperature by 23°C. A smart, belt-like waist fan that provides full-body surround airflow, helping to reduce perceived temperature by 20°C within 1 minute even at 40°C. 3-speed silent fan: 3 wind speeds: soft / refreshing / strong options. The shirt fan removes heat from your body in seconds. No need to struggle when working or traveling under the sun. 4-in-1 waist clip fan: 4-WAY waist fan with inner and outer dual clamp positions, specially designed to be worn on the waist, allowing for flexible wear and completely freeing your hands. Made with military-grade craftsmanship, it is waterproof, sweat-proof, drop-proof, and dust-proof. Fashion belt clip fan: This small fan is 9.0*11.2 cm in size, with inner and outer dual clamp positions, specially designed to be worn on the waist, and is also equipped with a lighting function, so you don't have to be afraid of the dark road at night.