Features: Experience superior efficiency with the manual antennas tuner, designing for high performances and minimal loss, perfect for enhancing your outdoor communication setups. This tuner is for various antennas, including long wire, and balanced line types, feature a power rating of 5w continuous and 10w intermittent, with bnc connectors for seamlessly inputs/output. For amateur radio enthusiasts, outdoor communication hobbyists, and shortwave radio users seek reliable and efficient tuning capabilities. Perfectly suited for outdoors adventure, this metal case tuner ensures robusts performances in diverse environment, making it a essential tool for field operations. With a matching impedance ranges of 25 to 2500 ohms and frequency coverage from 3-28mhz, this aluminum alloy tuner offers versatility and durability for your communication needs. Specifications: Component:Aluminium Alloy Color:Black Size:Approx.8.3x3.9x8.8cm/3.27x1.54x3.46inch Rating power: 5W Intermittent power: 10W Connector: BNC Matching impedance ranges: 25 to 2500ohms Frequency: 3-28MHz Package Includes: 1 Set Antennas Tuner note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.