Ms Jones, who doubles as Eleanor's dance teacher, uses a Cochlear mini microphone to instruct her niece during classes.

Eleanor, five, was born profoundly deaf and had cochlear implants when she was nine-months-old.

But last October she received a mini microphone, one of three new Cochlear wireless accessories.

The others include a phone clip for hands-free connection and a TV streamer.

The mini microphone allows Eleanor to hear clearly in noisy situations, such as ballet class.

Ms Jones clips the microphone onto her leotard and what she says is transmitted directly to Eleanor's Cochlear Nucleus 6 sound processor, which she also received last October.

If she is instructing another child at Jete! Exploring Dance studio in Mount Helen, she mutes the device so Eleanor doesn't become confused.

"It made a difference from the first time we used it," Ms Jones said.

"There are helpers in the class and she wouldn't hear hers at all but then she could immediately hear her."

Eleanor's mother Steph Downey said they also used it on their Wallace farm, particularly in noisy situations like on the tractor.

"Before she had to lip read or sign," Ms Downey said.

"She uses it in speech therapy too. We can use it grocery shopping, in cafes, anywhere with noise."

Cochlear Limited chief executive officer Doctor Chris Roberts said the new technology would bring enormous benefits.

"True wireless freedom not only means a significantly easier and more enjoyable hearing experience, it also helps recipients use modern technology like anyone else, so they don't have to miss out on what most of us take for granted," Dr Roberts said.

The devices are created jointly by hearing technology companies Cochlear and GN ReSound.