4" Portable Desktop Personal Cooling Fan -- Battery (AAx4) or USB Powered -- Black USB or Battery: AA x 4 (not included) Powered Portable Fan Provides Quiet Comfortable Breeze USB: Connect to USB port of your PC, USB Power Adapter, or USB Backup Charger Battery Option Makes it Great for Travel Size: 7.9 x 5.9 x 3.15" / 200(H) x 150(W) x 80mm(D), Cord is 4.3ft (110mm)