TomTom has been back to the drawing board and redesigned its Tom Tom One V4 satnav ranges, creating a NEW minimalistic car mount suction cup and enhancing the audio clarity of navigation instructions in the process.

TomTom's EasyPort is the first major change and is essentially a smaller version of the existing TomTom windscreen mount. But TomTom claimed the new sucker can be left on the device and folded flat after use. It's hardly a technological breakthrough, perhaps, but it does at least mean you can slip a Tom Tom One V4 into your shirt pocket with the suction cup still attached so there's no holder left in your car to tell thieves there might be a satnav in the glovebox.

TomTom has completely revised the audio system for TomTom ONE Version 4 satnavs. TomTom claimed the improvements mean navigation instructions to turn left at the next junction can be heard more clearly over car radios, screaming kids and honking motorists.

Tom Tom Map Share, which enables users to provide their own corrections to maps through an online community, is also featured on V4 models.