This is a DualSense wireless controller that has been disassembled, cleaned, and had its analog stick sensors replaced with high-quality TMR sensors (K-SILVER JS13 PRO). 〈Replacement Parts〉 ・Left and right stick caps ・Analog stick sensors replaced with TMR magnetic sensors 〈Inspection Items〉 ・Water cleaning and alcohol disinfection during disassembly of each part ・Inspection and contact cleaning of each button ・Microphone inspection ・Speaker inspection ・Trigger effect inspection ・Vibrator inspection ・Device software update A-0630 ・Calibration adjustment after stick replacement Tested with Monster Hunter Wilds and Borderlands 4, no problems. TMR sensors use magnetic force, so there is no physical wear between the sensor and the magnet, making stick drift, which was common with conventional sticks due to wear, extremely unlikely. Also, because it is a non-contact sensor, the feel when tilting the stick is different, and dead zone adjustment may be necessary depending on the game. If you've repeatedly had controllers drift in the past, or if you're worried about drift happening soon, consider purchasing this. Also, this product uses a used DualSense for maintenance, so it can be offered at a lower price, but there may be signs of use and minor scratches. Thank you for your understanding. In my personal opinion, after switching to TMR sticks, fine adjustments to the sticks became easier and much more comfortable, and I stopped using the original controller.