Handheld Mini Oscilloscope 2.8in TFT 1M Bandwidth 5.0MS/s Sampling Rate Digital Oscillograph Meter Item Type: Handheld Oscilloscope Mode: DSO153 Basic Parameters: Sampling Rate: 5MS/s Bandwidth: 1M Vertical Sensitivity: 10mV/Div-10V/Div Time Base Range: 500ns to 20S Voltage Range: X1: ± 40V (Vpp 80V) Trigger Mode: Automatic, regular, single Trigger Edge: Rising edge, falling edge Coupling Mode: AC DC Calibration Square Wave: Frequency: 1K; Duty Cycle: 50%; Amplitude: 3.3V Signal Generator: Frequency: 0-10KHz Duty Cycle: 0 to 100 perfect (rectangular and sawtooth) Amplitude: 0.1-3.3V Waveform: Sine wave, rectangular wave, sawtooth wave half wave, full wave, positive step wave, inverse step wave, ladder wave, noise wave, exponential rise, exponential fall, DC signal, multi sound, for Zinke pulse, for Lorenz wave Others: Display: 2.8 inches, PPI 320 x 240 USB Charging: 5V 1A Lithium Battery Capacity: 1 x 1000mAh rechargeable lithium battery (shipped with built in battery)