Need to perform medical analysis such as abdominal vascular, OB/GYN and fetal heart? The Zonare C4-1 ultrasound transducer is a must have. It will give you 8 frequency performance, 2D/M-Mode, quality color, consistent power and superb PW Doppler imaging. It is applicable for both Zonare Z One Convertible and Zonare Z One Ultra SP Convertible systems.