Features: Bugs fix: The mobile phone battery efficiency card can fix system bugs, improve battery utilization efficiency, and solve possible Popping up window problem. Battery frees cable: The design is simple and convenient, for Phone 11-15 series,not require additional power cable, saving usage cost and space. Powerful features: In addition to fixing bugs and improving battery efficiency, it also have a function to prevent Popping up window and improve user experience. Simple operation: Easy to use, convenient and fast to operate, suitable for ordinary users and professional technicians. Used to fix bugs in the mobile phone system and improve battery efficiency to ensure normal operation of phone. Specifications: Material:ABS Package Includes: 1x Battery Efficiency Resets Tool note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.