If you have any questions, please contact customer service first, do not open disputes easily, thank you! Specifications: Antenna loop size: 260mm/10.2" (inner diameter) Control box: 107 x 65 x 26mm/4.2 x 2.6 x 1" Working frequency: 10KHz-159MHz Operating temperature: -10? Operating Voltage: 5V/1A Power supply mode: TYPE-C charging/built-in 18650/2600mAh Impedance: 50Ohm Gain: 20db (Max) Charging circuit: built-in battery protection circuit to protect the battery from over-discharging and over-charging. It will automatically disconnect when the battery voltage is lower than 2.5v Package Included: 1Antenna with control box 1Manual 1BNC cable (5m/16.4ft) 1Power cord (Type-c) 2Output cables (BNC-3.51m/3.3ft; BNC-BNC1m/3.3ft) 1Adapter (BNC-SMA) Note: The outdoor part of this antenna is not waterproof. If you need to place it outdoors for along time, you need to take waterproof measures by yourself.Software sales are not refundable. This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "trolls222" and is located in this country: CN. This item can be shipped worldwide.