【Polite, Honest, and Prompt Shipping】 We specialize in selling high-precision genuine controllers. 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. We strive to stock and list 3-5 carefully maintained controllers each week. 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 causing stick drift or unresponsive buttons, are replaced as needed, resulting in a state that enables high-precision operation. (Example: We thoroughly perform physical precision restoration maintenance, such as cleaning the stick circuit board and adjusting the sensors, 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. Even for precision operations like FPS games, it is considered comfortable to use if it is in the late 5.0% range. 【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 of an initial defect or malfunction after receiving the product, we will handle returns, refunds, or exchanges, provided you contact us before leaving a review. Please contact us before leaving a review (we cannot handle issues after a review is left). If you have any questions, please feel free to comment.