... clip 4) ISO 9001:2008 B-Ultrasound Unit The Features of B-Ultrasound Unit:Portable and attractive plastic injection design: small-sized ... filter ensuring a comfortable operationDisplay mode: B, B/B, B/M, M and 4BProbe Frequency: 2.5MHZ--7.5MHZScan Mode: Convex,Electronic ... and weight.Dual direction 192 frame cine loop B-Ultrasound Unit