This is a set, so you need to assemble it by yourself, which can improve your manipulative ability. It can work effectively in broadband, overlapping radio amateur HF bands from 1.8mhz to 50MHz. The max current consumption is 400mAh, and it with 7 inductance and 7 capacitance. It is easy to carry, so you can take it with you to anywhere you want to use it. With the OLED screen, which can let you see clearly the data, give you a better using experience. Step for measurement on powers under 10 watts: 0.1 watt Step for measurement on powers above 10 watts : 1 watt Power measurement accuracy : 10percent Maximum inductance set: 8.53uH Minimal step for setting inductance: 0.05uH Maximum installed capacitance: 1869pF Minimal installed capacitance: 10pF Types:finished kit Colour:black Material:plastic Size:about 128 x 62 x 20mm OLED size: 28 x 27mm or 1.1 x 1.1in weight: 129g or 4.6ounce Package Contents: 1 x PCB 1 x OLED 1 x Accessory Only the above package content, other products are not included. Note: Light 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.