(Regular Version)Standing Meter Mini Watt/SWR Power Meter 11W 1.6MHz-30MHz
Insert SWR: <1.02at50Ω. Application: The power standing wave device is based on G8GYW open source design and is designed for shortwave radios. Built in Lithium Battery Capacity: 400mAh (Can be used continuously for more than 30 hours).