Power supply: TYPE-C interface power supply & 3.7v lithium battery power supply Frequency range: 23.5mhz-6000mhz Maximum output power: +5dBm three-speed adjustable Control mode: button control serial port control Product features: 0.96-inch oled display, integrated lithium battery charging circuit, can support 3.7v lithium battery. Product size:80mmx55mmx10mm Weight:40g Instructions for use: 1. Plug in the TYPE-C power cord or lithium battery, and turn on the power switch. 2. There be a two-second wait on the power-on interface, and you can any key to enter the setting interface. 3. There are three functions in total: Point Mode: fixed frequency output, change the frequency and output power by pressing the button. Sweep Mode: Sweep output, you can set the start frequency, stop frequency, single sweep and cyclic sweep Sweep Set: Sweep step frequency setting and adjacent frequency interval time setting 4. This product has a power-off automatic save function. After powering on again, it automatically execute the work content before power failure without repeated settings. Colour: Material:ABS Package Contents: 1 * Signal Generator 1 * Type C Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.