B-Ultrasound Unit 1) Portable & attractive plastic injection design 2) small-sized, lightwight 3) with clip 4) ISO 9001:2008 ... mode: B, B/B, B/M, M and 4BProbe Frequency: 2.5MHZ--7.5MHZScan Mode: Convex,Electronic LinearMeasurement: Distance, Circumference, Area ...