... .2channle, color display 4.with USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS-2025CAChannels2+Ext ... (D)mmWeight3kg *Specifications are subject to change without prior notice. DS-2025CA USB Oscilloscope, 25MHz freq.,dual channel digital oscilloscope