1. Dual-Color For Frequency Differentiation: Our Loop Antenna Features Dual-Color Design, This Antenna Is A Narrowband High-Resistance Resonant Antenna, Which Should Be Used With The Malachite Receiver High-Resistance Input Port, Otherwise The Antenna Will Be Out Of Tune And Cannot Work 2. Easy To Install And Use: Our Circular Antenna Is Designed For Easy Installation And Simple Operation, Ensuring Users Can Start Using It With Minimal Effort. 3. Compact And : Our Donut Antenna Is Small And , Making It Convenient To Carry And Store When Not In Use. 4. High-Quality Material: Our Antenna Is Made Of High-Quality Material That Ensures Durability And , Providing Users With Long-Lasting Performance. 5. Fine Workmanship And No Burrs: Our Antennais Finely Crafted With No Burrs Or Sharp Edges, Ensuring A And Safe User Experience. Model:SW Short Wave Antenna + AM (MW) Medium Wave Antenna Frequency Range:4MHz-24MHz+500MHz-2000MHz Colour:Blue & Red Material:PCB Size:14x9cm Package Contents: 1 * SW Short Wave Antenna 1 * AM (MW)Medium Wave Antenna 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.