Royal Time Management System (TimePilot Tap+) Portable or Hand-held Time Management System Uses buttons Instead of Time Cards,Handles up to 2,000 Employees PC Compatible Computer running Windows 8 , Windows 7 , Windows Vista , Windows XP (With Service Pack 2) , Windows 2008 Server or Windows 2003 server , 2GB Available on Hard disk,USB Port(1.0 and above). Automatic Calculation and Tracking of Regular Time and Overtime TimePilot Tap+ Timeclock With Built in Rechargeable Battery,10 iButtons,USB Cable,TimePilot Software,User Manual,Quick Start Guide .