Various products using binaural beats and brainwave harmonization have been released, but all use ...    More ...

Various products using binaural beats and brainwave harmonization have been released, but all use stimulating and repetitive singleton audible sound, or color noise (white, pink noise, etc.) and ASMR (tapping, whispering, mouse sound, etc.) They were products using stimulating sounds such as autonomous sense pleasure response.
All of these products have been steadily concerned about the side effects of hearing aroused by repeated listening to stimulating sounds, or finding a more stimulating sound as you get used to it.
The NRT-A1 product released by our company is equipped with RBS (US, Japan, and Korean patents), which is a state-of-the-art sleep care technology, and creates a binaural sound effect by making a difference in the left and right frequencies of a user-selected sound source. There is no concern about side effects because only the sound source itself is used without adding sound or frequency.
In addition, it is the most consumer-friendly product in that there is no restriction on selection by using the content (sound source) selected by the user rather than limited content provided by the company, and it reflects the consumer's unique taste.
The NRT-A1 is a portable sleep care product that is compact and lightweight for maximum portability, emphasizing luxury through a wide range of aluminum materials, and it is easy to use by adopting a TWS earphone that meets the recent trends.
Unlike similar products from other companies, it is also possible to listen to music and listen to music on a regular basis.

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