... .imported CRT,sweep function MCH Digital Readout Oscilloscope, OS-3100G 100MHz Oscilloscope, dual channel/four traces:Specifications: ... /division +/-3%Phase difference≤3%, DC-50KHzBandwidth of X axleDC-500KHz (-3dB)Horizontal reflection systemTriggering modeNORM , AUTOSweep ... Power supply220V/110V +/-10%; 50/60HzDimensions450(W) x 150(H) x 310(D)mmWeight9kgEnvironmental TemperatureDuring operation: 0ºC ...