Sony has revealed remarkably high sales of the PlayStation VR. In only four months, the virtual reality headset has sold 915,000 units, according to Sony Interactive Entertainment CEO Andrew House. The company only set a goal of 1 million sales for the first six months.

Often stats of this sort aren’t revealed unless they’re really good, which is a sign about how Sony is feeling in regards to the PSVR’s performance.

We don’t know how many Oculus Rift and HTC Vive units have sold. Some of the estimates that have been floating around are below the PSVR’s sales.