1、It has 10kHz to 220MHz working ranges. 2、0.5PPM high precise Tcxo clock, the frequency is more accurate. 3、Tuning step of 1Hz, 10Hz, 1kHz, 5kHz, 10kHz and 1MHz. 4、Intermediate frequency (IF) offset (+ or -) is adjustable. 5、20 band presets (shortcuts) for BCB and HAM frequencies. 6、Equipped with generator function mode. 7、RX/TX mode selector for Homebrew QRP transceivers. 8、The bar graph of the signal meter through the analogs input (ADC). 9、It can be used as a local oscillator on Homebrew radio receivers (such as superheterodyne, software defined radio, direct conversion and Homebrew QRP transceivers). 10、Can be used as a simple RF/clock generator for calibration reference or clock generation. 11、And also can be used as a common 128x64 I2C OLED display and Si5351 module. 12、I2C data transmission, only need 2 lines it can be connected to the display, with high stability and accuracy of frequency generation. Specifications: Name: Transceivers Battery: 1 * 3.7V, 600mAh battery (included) Item size: 90 * 100 * 40mm / 3.54 * 3.94 * 1.57in Item weight: 200g / 7.05ounce Package size: 175 * 126 * 55mm / 6.89 * 4.96 * 2.17in Package weight: 256g / 9.03ounce 1 * Transceivers 1 * Type-C Cable