... .2channle, color display 4.with USB interface MCH USB Oscilloscope, DS-2025CA Digital Oscilloscope, 25MHz freq. ,dual channelSpecifications: SpecificationsDS-2025CAChannels2+Ext.TriggerBandwidth25MHzRising ... to change without prior notice. 25Mhz DS-2025CA USB digital Oscilloscope dual channel 25MHz freq.,