USN60 is suitable for the automatic scanning system of portable instruments, set the simulation performance and the number of advantages in a body. USN60 has the advantages of stable quality, portable, durable and reliable. Detection range: 1 ~ 27940mm continuous adjustable or adjustable within the preset range: 250 ~ 16000m/s, continuous adjustable, 1m/s step, 65 kinds of material sound speed optional.