Thanks to your support, we have received high praise from many people. We specialize in selling high-precision genuine controllers, with the motto: "Polite, Honest, and Fast Shipping." We prioritize internal "high precision" and "reliable usability" over external appearance. 【Product Description】 Product Name: PS4 DualShock 4 Model Number: CUH-ZCT2J 【Supply and Quality Control】 To maintain thorough quality, we do not list large quantities at once. If you want to quickly check out clean and reliable controllers, please follow us! 【Precision Maintenance for FPS】 Each controller is completely disassembled and meticulously cleaned with anhydrous ethanol, down to the circuit board and small parts. Defective parts, such as those with stick drift or unresponsive buttons, are replaced as needed, and the controller is finished to enable high-precision operation. (Example: We thoroughly perform physical precision restoration maintenance, such as cleaning the stick circuit board and sensor adjustment, which is done by other professionals.) 【Operation and High-Precision Guarantee】 All controllers undergo the following tests after maintenance: 1. Precise numerical adjustment using "GAMEPAD TESTER" and "DualShock Calibration GUI." 2. Final operational check through actual gameplay testing in "APEX LEGENDS." 【About Joystick Information】 Generally, a stick error of 7.9% or less is considered excellent. For precision operations such as FPS, it is considered particularly comfortable to use if it is around 5.0% or less. 【For FPS Game Users】 In FPS games, if you set the dead zone (e.g., "Linear" setting in APEX) extremely low, unintended movements (drift phenomenon) may occur due to the subtle characteristics of each controller. This is due to the controller's quirks and is not considered a malfunction, so please understand this beforehand. 【Reliable Initial Defect Guarantee】 In the unlikely event that there is an initial defect or malfunction after the product arrives, we will provide a return, refund, or exchange, only if you contact us before giving a review. Please contact us before giving a review (we cannot respond after a review is given). If you have any questions, please feel free to comment.