This oscilloscope has .4-inch TFT display, 320*240 resolution, you can see the measurement data displayed on the screen. 2.5MHz sample rate, 200KHz actual bandwidth, 500KHz analogue bandwidth (sinewaves). The efficient one-click AUTO function displays the measured waveform without tedious adjustment. Waveform measurements display functions that can be used to detect sinewaves, square waves, half-waves, sink pulse waves, etc. Features: Equipped with a 2.4-inch TFT display, 320*240 resolution, you can see the measurement data displayed on the screen. 2.5MHz sample rate, 200KHz actual bandwidth, 500KHz analogue bandwidth (sinewaves). With complete trigger function (single, normal, automatic), no matter for periodic analogue signal or non-periodic digital signal can be used freely. The measurement of the voltage signal is up to ±400V. The efficient one-click AUTO function displays the measured waveform without tedious adjustment. Waveform measurements display functions that can be used to detect sinewaves, square waves, half-waves, sink pulse waves, etc. With one-button waveform saving feature. ​Only the part of the waveform that is currently being displayed can be saved. Widely applicable, it can be used in a wide ranges of applications such as automotive maintenance, appliance maintenance, teaching, and research. Note: Some of the measured signals cannot be correctly captured with AUTO and need to be adjusted manually. Firmware upgrade: To upgrade the display part, press OK to turn on the machine, to upgrade the bottom part, press SAVE to turn on the machine. Specifications: Name: Handheld Oscilloscope Material: plastics Model number: SCO_1_500K Type: standard configuration, high configuration (optional) Rate of adoption: 2.5MHz Analogue bandwidth: 500KHz Actual bandwidth: 200KH Measuring ranges: X1/土40V; X10/土400V Input impedance: ΙΜΩ Depth of storage:1Kb Parameter type:12 PWM output: Frequency: 1K-80KHz Duty: 0-100% Voltage: 3.3V Function: 17 Waveforms Output: Frequency: 1-1KHz Voltage ranges: 0-3.3V (fix) Display: 2.4" TFT 320*240 Resolution ratio Charging voltage: 5V Battery capacity: 1 * 3.7V, 600mAh (included) Upper computer: Not supported for now Firmware upgrade: Support Item size: 50 * 100mm / 1.97 * 3.94in Package size: Standard configuration: 135 * 102 * 30mm / 5.31 * 4.02 * 1.18in High configuration: 105 * 155 * 40mm / 4.13 * 6.10 * 1.57in Package weight: Standard configuration: 200g / 7.05ounce High configuration: 250g / 8.82ounce Packing List (standard configuration, ±40V): 1 * Handheld Oscilloscope 1 * Clip OR Packing List (high configuration, ±400V): 1 * Handheld Oscilloscope 1 * Probe 1 * Clip