Comprehensive ABI Doppler Systems Graphic waveform display with on screen step by-step ABI guide and “FastView” mode to customize exam. Built-in printer for waveforms, pressures, and index on adhesive-backed label paper. Automatic ABI & TBI Calculation (Ankle Brachial Index and Toe Brachial Index). Automatic cuff inflation/deflation system. Bi-directional Doppler (5 and 8 MHz probes) and 5 blood pressure cuffs included. Pulse Volume Recording (PVR) waveform modality. Photoplethysmography (arterial PPG) for digit Pressures. Battery or AC power.