COMPUTER CASE FUN,AC/DC,ball/sleeve bearing COMPUTER CASE FUN,AC/DC,ball/sleeve bearing Dimension:25*25*10Rated Voltage:5V/12V/24V/48VLife Span:30000 hrs (25 Sleeve bearing) 40000 hrs (25 1 sleeve & 1 ball bearing) 50000 hrs (25 2 ball bearing)Speed:low/medium/high CEIEC COMPUTER CASE FAN 2510