Features: Special Matching: This charging board is designed specifically for QC45 headphone, ensuring perfect compatibility and not affecting the normal use of the headphone. Quality: Durability and safe, effectively extending the service life of the headphone and ensuring charging stability. Easy Installation: Provides detailed installation guidance, allowing users to easily replace without the need for professional skills, saving maintenance costs. Resolve charging issues: Effectively fix the problem of inability to charging, allowing users to quickly repair the functionality of the headphone and avoid the cost of purchasing new devices. Safety protections design: Built in overload, short circuit, and overheating protections mechanisms ensuring safety during the charging process and avoid damage to the headphone. Lightweight and portable: With a compact size, it is easy to carry and suitable for use at home or while traveling, allowing you to charging your headphone. Specifications: Component: PCB Size: approx. 2.55cm/1.00in Applicable Model: for QC45 Wireless Headphone Note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Package includes: 1Pc Replacement Charging Port Board Charging Board for QC45 Headphone Ensuring Perfect Compatibility High Durability and Simple InstallationReplacement PCB Charging Board with Easy Installation Guide for QC45 Headphone Repairing Charging IssueReplacement Charging Board Fix Headphone Charging Simple Installation for QC45