Specifications: 3 wind speed adjustable, convenient to use. Built-in battery has dedicated IC charging circuit, with overcharge and over discharge protection, safe and reliable charging. Using time: 3 hours in slow wind speed, 2 hours in middle wind speed, 1 hour in fast wind speed. Small and light, easy to carry. Name: Mini Fan Material: ABS Battery: Built-in 500mAh Battery(Included) Features: Bladeless, 3 Wind Speed, Portable, Rechargeable Size: 11.5cm x 8cm x 2.8cm/4.53" x 3.15" x 1.10" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Mini Fan 1 x USB Cable 1 x Lanyard