Features: Supports two power supply modes. Firstly, it comes with a USB power cable, which can be used by simply plugging in the power supply. Secondly, have the option to solder a battery case yourself and install a battery(not included). After assembling the radio, will have a fully functionals device with a headphone plug. This allows to easily plug in your headphones and enjoy it in privacy without disturbing others around your. Your have the freedom to adjust both the channels and volume settings according to your preferences. Additionally, the volume can be easily adjusted by adjusting the potentiometer. This kits features a digital display and easy adjustment, making it user friendly for both beginners and experienced hobbyists. Designed for electronic enthusiasts, hobbyists, and students interested in learning about electronics and honing their soldering skills. Specifications: Material:ABS Work Voltage:DC3V/5V Output impedance:8ohm Output power:0.5W Output channel:Mono Receiver Frequency:87MHz~108MHz Frequency accuracy:0.1MHz Work Temperature:-40℃~85℃ Package Includes: 1Set DIY Radio Kits note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.