Specifications: 1. Material: ABS 2. Adjustment: 360 degree adjustment 3. Battery capacity: 1200mah 4. Power Supply: USB/Built-in 18650 Lithium battery(included) Features: Enjoy this three quiet speeds which is without pesky background noise to suit your preference without disrupting family, roommates, or your sleep, you can adjust it to the most comfortable wind speed. Built in rechargeable Lithium battery. Fully charged batteries can last for up to 6 hours depending on different speed. USB charging from a computer, power bank, USB Charger, can be also powered by USB power source. You can customize the direction of airflow and cooling with the adjustable head for times when you need to move around the room or to accommodate more than one person. The strong & sturdy grip clip keeps this fan firmly in place, which ensures that airflow is being directed to the desired location & doesn't slip or fall. Can be Put or Clip on anywhere you want, great for baby stroller, home and office, laptop, gym workout, car backseat, outdoors, camping, trips, strollers and anywhere need cool wind. Package includes (Built-in Battery): 1* Clip On Fan 1* USB Cable