Features: Our writing cable M3688 and DM1400 radios provides a convenient and fast programming function, allowing you to easily set the frequencies. Designed specifically M3688 and DM1400 radios, our cable ensures compatibility and stability, guaranteeing accurate and consistent frequency settings. This product is perfect for radio dealer who need to provide frequency setting and programming services to their customers. Whether you're in the wireless communication accessories market, electronic device repair services, or wireless communication training and education, our cable can be used for practical demonstrations and frequency recovery or changes. With its USB interface design, our cable allows for high speed data transfer between your computer and the radios, ensuring reliable and efficient programming. Specifications: Material:Plastic Size:As Picture Shown Color:Black For M3688 DM1400 Package Includes: 1x USB Programming Cable 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. Thanks for your understandings.