GA-450 SW Radio Mini Loop Antenna. Well it surprised me !

Banggood GA-450 Portable Short Wave Radio Active Loop Antenna 3 to 30MHz & MW. Small 20cm rotating stainless steel receiving ring. Rechargeable 18350 lithium battery. Buy :// SDR Radio Review. Features: Tuning Ring made of stainless steel and is portable. Equipped with 18350 lithium battery. Built-in type-c charging port. Specifications: Frequency range: SW Impedance: 50 ohm Ring diameter: 20cm Control box: 10.5*6.5* Charging port: type-c Package Included: 1 x Receiving ring 1 x Antenna box 1 x Built-in 18350 lithium battery 2 x Feeder cables (BNC-3.5 and BNC-BNC)