Highlight Features: Recording: 12- or 3-channel ECG Compact size: 68 mm x 53 mm x 16 mm Operating time: Up to 2 days Sampling rate: Up to 512 Hz / 16 bit Display: LCD, 128*64 dot matrix Storage medium: Removable SD card Data transfer: Hi-Speed USB, Card reader Pacemaker detection: Yes Features ?Compact Size, Light Weight 68mm × 53mm × 16mm 42 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 ?128 × 64 Dot Matrix LCD Display Visual confirmation of patient hook up Provides on demand ECG review of all channels Confirms programming instructions before recording ?Programmable Pacemaker Detection Real time detection and display of pacemaker pulse ?10 Languages Available Items with * are optional accessories.