DESC: Adapter is compatible with Microsoft Windows 98SE, ME, 2000 and XP. Compatible with these monitors: AXN500, AXN700, F55, S610i, S625X, S710i, S720i, S725, S725X, S810i, RS400, RS800, CS400, RS400SD, RS800SD and CS600. Data from heart rate monitor to adapter will transmit up to a distance of 39 in. Infrared adapter connects to any standard PC or laptop USB port, allowing you to transmit training data wirelessly to your computer. Now you can link your Polar heart rate monitor data wirelessly to your computer via this handy IrDA USB 2.0 Adapter. Polar IrDa USB 2.0 Adapter includes: USB IR Interface 2.0 Adapter, cable, users manual, CD-ROM and driver setup.