Features:1.Free Your Hands: Just attach it to your schoolbag/backpack straps or wear it on your wrist. Enjoy cool airflow, anywhere and anytime. Perfect cooling when you?re on the go!2.Unique Wristband Design: feels comfortable on your wrist, or attach it to your daypack straps. Take it wherever you go, with little effort.3.Designed for on-the-go: portable and lightweight (10.8x8.6cm,150g) makes it extremely convenient to take with you while enjoying a theme park, waiting in line etc.4.User-friendly: Detachable and 360° rotatable wristband allows you to remove the fan from your wrist or backpack strap easily and hold it in your fingers.5.USB Rechargeable: Built-in 1500mAh battery, can be powered by power banks, laptops, car chargers or a USB wall charger. 3 adjustable speed levels (low/medium/high) to meet your needs. Size:100*86*52mmInclude:1 x Wrist fan