Amazon.com: Razer Raiju Tournament Edition (2019) - Wireless and Wired Gaming Controller for PS4 & PC (Wired and Wireless Bluetooth Controller, Mecha-Tactile Action Keys) Black : Video Games
Razer issues a firmware update to combat latency in Raiju Series of controllers | KitGuru
Just received my Razer Raiju Ultimate - First impressions! : r/razer
Hardware Review: Razer Raiju Ultimate - Probably the PS4's Best 'Pro' Controller, But It Ain't Cheap | Push Square
My Raiju Ultimate got bricked by Razer firmware and even though it's still under warranty Razer won't help. : r/razer