HP PageWriter XLe M1702A Electrocardiograph Operates in AC and battery modes (uses common 12V battery),AC operation indicator light,DC charge indicator3 trace chart printout, 8.5 x 11inch paper with annotation spacePatient data entry keyboard5, 10 25 and 50 mm/sec chartspeedAdjustable ECG scaleLeads placement chartOn/Standby push buttonAuto or manual start9-pin ECG and data comm portsDimensions: 22"L x 15"W x 5"HWeight 25 pounds For more information, feel free to contact us