Features The shell is made of hard plastic material, strong and durable, has a long service life. Product withstand power <100W SSB, smoothly operation and good performance. Small size andeasy to disassemble, suitable for outdoor setting and QRP use. Can be used for unbalanced output of sound reinforcement level audio equipment, etc. Balun is a bidirectional balanced to unbalanced converter, very practical. Specification: Item Type: 1:9 Mini Balun Material: Plastic shell Use Frequency: HF Withstand Power: <100W SSB Interface Type: M  Features: Small size, convenient disassembly and assembly, suitable for outdoor setting and QRP use. Package List: 1 x Mini Balun Note: For long‑term outdoor use, the upper and lower covers of the shell must be bonded and sealed with silica gel Package List 1 x Mini Balun