HTC's chief financial officer has hinted on an upcoming device that will combining mobility with VR.

The new device will be compatible with HTC's new flagship smartphone, the U Ultra. But don't expect it to be yet another headset like Samsung's Gear VR, which operaes using a Galaxy smartphone attached.

"Vive is very top end, and in the coming months you'll see our plans in terms of mobility and VR, and it's not a phone slapped onto a headset. It'd be a different thing," said Chia-lin Chang, HTC's chief financial officer at a HTC U series launch event in Singapore.

Mobile VR headsets such as the Gear VR and Google Daydream View work by connecting to a phone that plays VR content. More expensive headsets such as the Oculus Rift, PlayStation VR and HTC Vive are powered by high-end consoles or gaming PCs.

Chang added that the mystery VR product would be launched before the end of the year.