SENPAIC Oscillating Fan Desk Table USB Fan ( USB or Battery Powered ,2 Speed,Quietness)(Black) Metal mesh, glossy and sturdy, can be taken down to clean the blades USB or battery (4 AAA) powered. Please note that the batteries are not included Rotating back and forth (right and left) automatically by rotate the top button to the swing. Manually adjust the fan head angle (up/down) to the position you want 2 speed levels, free to choose the speed you want Small beautiful fan, perfect for the office, home, dorm, study, library, games room