UGREEN 20501 2.5mm Male to 3.5mm Female M/F Adapter High Quality Cellphone And Headset Adapter Description: UGREEN 20501 converts the 2.5mm male to 3.5mm female. It is ideal solution for connecting your normal 3.5mm headphones to PDA ,phone or other devices with 2.5mm audio socket. Specification: 1. Input: 2.5mm male 2. Output: 3.5mm female 3. Aluminum case 4. Gold-plated Package: UGREEN 20501 2.5mm Male to 3.5mm Female Adapter x1