Feature: 1. SIMPLE CONTROL: Portable radio receiver, using LED screen buttons and encoder to complete all control, easy and fast in operation. 2. ALUMINUM ALLOY: The receiver shell is made of aluminum alloy material, lightweight and wear resistant, and has good heat dissipation effect. 3. LED DISPLAY: This radio receiver has a 0.3in LED display, which has convenient and intuitive reading and simple operation. 4. 4 LEVELS ADJUSTABLE: The output amplitude is adjustable in 4 levels, which can realize the function of point frequency or sweep frequency. 5. WIDE FREQUENCY RANGE: The radio receiver has a wide frequency range, can be set arbitrarily within the range, and has a wide range of applications. Specification: Item Type: Radio Receiver Material: Aluminum Alloy Battery Specification: 3.7V lithium battery 1000mAh (built in battery) Charging Interface: TYPE C charging interface Control Mode: LED screen buttons and encoder complete all control Screen: 0.3in LED screen Power: 1mW TYPE C Interface Upgrade Program: Support. Package List: 1 x Receiver Host1 x Interface1 x USB Cable Note: Match the appropriate frequency range before use