Optimized for portable use: Designed for QRP (low power) operation, this manual antenna tuner is perfect for amateur radio enthusiasts Its 5W output power ensures efficient communications while being energy efficient Wide frequency range: Capable of tuning from 3 to 28 MHz, this tuner works across a wide range of bands and modes, ensuring you can find the best signal wherever you are Compact and : Its small size and rugged construction , and it's rugged enough to handle the outdoors, making it ideal for field operations and emergency setups Power: Rated power 5W, intermittent power 10W Connector: BNC Matching impedance range: 25 to 2500 ohms Frequency: 3-28 MHz Colour:Black Material:Aluminum Alloy Package Contents: 1 x host 1 x Machine foot pad 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.