Included with one transducer either 2 MHz or 3 MHz for fetal heart detection * Advanced pocket Doppler with three FHR modes * Features LCD Display auto-correlation active noise reduction digital interface to Dopplex Printer to produce fetal heart tracing * Size: 5.5 x 2.9 x 1.1 * Power source: 9 Volt battery * Includes power cord gel battery fitted pocket clip warranty card and user manual *