Kaiser 4 AndaSeat Kaiser 4 review: I've reviewed dozens of office chairs and this is the most comfortable one yet thanks to its unique functions AndaSeat Kaiser 4 is a gaming chair with internal lumbar support that includes a pop-out function to better fit your body shape. Get the Windows Central NewsletterAll the latest news, reviews, and guides for Windows and Xbox diehards.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1A lifetime's worth of ChatGPT? OpenAI could launch weekly and lifetime AI subscription plans2Sam Altman says "I don't do Google searches anymore" — but admits ChatGPT won't be Google's killer3Overwatch 2 developers at Blizzard Entertainment form union under Microsoft4Helldivers 2 players are in the middle of a wild new ARG that's doubtlessly teasing a new update, and you can help solve it5Days after the death of Skype, Microsoft's other messaging app received an AI update — no, not Teams