Generators descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. 1 Set Of Electronic Diy Radio Kit. Specification: Material: Metal + Plastic Color: Red Size: Approx. 122*66*26mm Frequency Range: 525-1605KHz Output Power: 100MW Power Supply: 3V (No. 5 Battery) (Not Included) Circuit Theory Introduction: the Main Properties of the 108-2 7 Transistor Radio Frequency Range: 525~1605KHZ Speaker: Approx. 57mm Diameter, 8 Ohm Feature: Secondary Intermediate Standard Circuit. Has Been Adjusted in the 465KHz. Circuit at All Levels Have Ic Test Port. The Whole Machine Contains 7 Triodes, So It is Called a 7-tube Radio. Among Them, the Triode V1 is the Frequency Conversion Tube, the V2 and V3 Are the Middle Discharge Tubes, the V4 is the Detection Tube, the V5 is the Low Frequency Preamplifier Tube, and the V6 and V7 Are the Low Frequency Power Amplifier Tubes. Package Included: 1 Set X Radio Electronic DIY Kit. Products number : SOMONO88446