Highlight Features Recording: 12- lead or 3-channel ECG Optional SPO2* Compact size: 72 mm x 55 mm x 16 mm Operating time: Up to 2 days Sampling rate: Up to 512 Hz/16 bit Storage medium: Removable SD card Data transfer: Hi-Speed USB, Card reader,Bluetooth®* Pacemaker detection: Yes Items with * are optional advanced functions. Features Compact Size, Light Weight 72mm × 55mm × 16mm Approx. 47 grams (battery not included) Fully Programmable, High Fidelity, Research Grade Performance Sample rate up to 512 samples per second No data compression 8, 10, 12 or 16 bit resolution Patient Cable 10 wire patient cable (I, II, III, aVR, aVL, aVF, V1~V6) 5 wire patient cable (any 3 leads in V1~V6) Lower Power Consumption Powered by single AAA battery 24h, 48h of full disclosure Removable SD Card 2GB records up to 48 hours of 12-channel ECG Programmable Pacemaker Detection Real time detection and display of pacemaker pulse 24 Hours SPO2 Measurement Two sensors of forehead or finger Wireless Transmission* Visual confirmation of patient hook up Provides 12-channel ECG preview on PC Items with * are optional accessories or function.