This is a 2-way handheld fan that can be charged via USB and used for up to 10 hours. I used it for about 30 minutes after charging, but then put it away. Even on the lowest setting, the airflow is quite strong, and it's relatively quiet. - Type: USB rechargeable handheld fan - Style: 2-way style - Airflow settings: 3 levels (low, medium, high) - Battery life: Up to 10 hours - Charging time: Approximately 3 hours - Body size: W110 x H220 x D40mm Please see below for a detailed product description. https://www.century.co.jp/products/hf720.html Thank you for looking. * If you don't need the box, a 200 yen discount is available.