Here is another helmet fan that helps you stay cool in the summer. The Tajima Seiryo Helmet Cooling Fan has a lightweight design, 3 wind speeds, and 2 wind directions. It runs on a 2900mAh battery that lasts up to 12 hours on low mode.
This helmet fan has a USB-C charging interface. It weighs only 295g, so it won’t make you comfortable wearing it.