【Up to 42V Output Fan & Battery Set】The latest 2025 summer model is here! This fan and battery set achieves a maximum output of 42V. By attaching it to work clothes, it draws in outside air, circulates a large amount of air, promotes sweat evaporation, and effectively lowers body temperature. Because sweat evaporates faster, discomfort caused by excessive sweating is reduced. Even in the scorching summer heat, you can enjoy a cool breeze for a long time! This product is compatible with work clothes with a fan hole diameter of 9cm and can be used with most commercially available work clothes. Please be sure to check before purchasing. 【Japanese-Made Brushless High-Speed Motor & New Structure Fan Blades】Our 42V fan and battery set is equipped with a newly developed Japanese-made brushless motor. The rotation speed is more than twice that of conventional models, achieving a more powerful airflow (219L/second) while maintaining quietness. The high-performance motor with an all-copper core structure is energy-efficient and generates concentrated, straight airflow. The newly designed fan blades expand the surface area while suppressing wind dispersion, creating a powerful and straight airflow. High-quality ABS resin is used to achieve both impact resistance and heat resistance, realizing an ultra-long lifespan of approximately 20,000 hours. The 9CM compact design allows it to be attached to various fan-equipped work clothes. The innovation in motor efficiency and fan design dramatically improves the cooling performance at the worksite. 【High-Performance 21700 Type Large Capacity Battery & Amazing Heat Dissipation】This fan and battery set uses the latest 21700 type large-capacity battery, which not only has excellent energy-saving performance but also achieves a lifespan more than twice that of conventional batteries. Equipped with a convenient USB output port, it is a multi-use design that can quickly charge electronic devices such as smartphones. By combining fire-resistant, high-temperature materials, state-of-the-art electronic circuit boards, and high-quality lithium-ion polymer batteries, and further optimizing the circuit configuration, heat generation is significantly suppressed. It has obtained PSE certification and is equipped with multiple safety features such as short-circuit protection, overcurrent protection, overcharge protection, and over-discharge protection, ensuring the industry's highest level of safety. With excellent heat dissipation performance and a reliable design, you can use it continuously for long periods with peace of mind. 【42V Ultra-High Output & 2025 New Release】Fan & Battery Set, Work Clothes Dedicated, Large Capacity Battery, Energy Saving, PSE Certified, Water and Dust Resistant, Heatstroke Prevention, Outdoor, Agriculture, Fishing, On-site Work, Unisex, Compatible with 9cm Diameter Fan Holes