The GameSir X2 Pro builds on the X2 in ways the X3 didn't while also lacking features introduced on the X3.
GameSir X2 Pro Review - Close To Perfection
GameSir X2 Pro Mobile Game Controller for Android Phone, Play Xbox Game Pass, Xcloud, Apex, Stadia, Luna - Mappable Back Buttons - Passthrough Charging【Include 1 Free Month Xbox Game Pass Ultimate】
GameSir X2 Mobile Gaming Controller - Type-C
GameSir-X2 Pro-Xbox (Android) gaming controller review - like carrying around an Xbox Series X - The Gadgeteer
GameSir X2 Pro Mobile Game Controller for Android Phone, Play Xbox Game Pass, Xcloud, Apex, Stadia, Luna - Mappable Back Buttons - Passthrough Charging【Include 1 Free Month Xbox Game Pass Ultimate】
GameSir-X2 Pro-Xbox (Android) gaming controller review - like carrying around an Xbox Series X - The Gadgeteer
GameSir X2 Pro Review - IGN
DESIGNED FOR XBOX / ANDROID: GameSir X2 Pro Android controller is officially licensed by Xbox and is compatible with Android phones running Android
GameSir X2 Pro Mobile Gaming Controller for Android Support Xbox Cloud Gaming, Stadia, Luna, Android Controller with Mappable Back Buttons, Detachable
GameSir X2 Pro, Review - Controller Nerds
GameSir X2 Pro Mobile Gaming Controller Review - Fossbytes
GameSir-X2 Pro-Xbox (Android) gaming controller review - like carrying around an Xbox Series X - The Gadgeteer
GameSir X2 Pro Mobile Game Controller for Android Phone, Play Xbox Game Pass, Xcloud, Apex, Stadia, Luna - Mappable Back Buttons - Passthrough Charging【Include 1 Free Month Xbox Game Pass Ultimate】