PS-7便携式测深仪*显示屏：LCD(7segments)&frequency:200KHz(directionangular24°)*声纳范围：0.6-79milluminati***:Filamentlight/write*电源自动关闭功能：Automaticinapproximately10secondsoffpowersource:DC9V*电池寿命：Measurableof500timesormore*仪器重量：大约300g尺寸:24(phi)×198(L)mm)