Features: Brand new and high quality Automatic antenna Tuners: The AT100M Pro antenna Tuners can automatically adjust the standing Waves ratio of the antenna to ensure the best working effect at different frequencies and improve the quality of radio communication. Multifunctional support: In addition to antenna Tuners function, this product also supports Morse code exerciser, which is convenient for users to learn and practice Morse code. Wide frequency ranges: covering the frequency ranges from 1.8MHz to 30MHz, it is suitable for radio communication and meets the requirements of different frequencies. Automatic operation: Using automatic antenna Tuners technology, users can realize automatic Tuners by simple setting, eliminating the tedious process of manual adjustment. Radio enthusiasts: Suitable for enthusiasts who are interested in radio communication, hoping to improve the quality and stability of radio communication through antenna Tuners. Specifications: Material:ABS+Metal Battery capacity: 3300mAh Charging time: about 4 hours Product power consumption: 5W Standby time: about 150~200 hours (no Tuners action) Tuners time: about 10~25 hours (start 1-3 relays) Package Includes: 1 Set Antenna Tuners note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.