Elmadag Cad. No:81
Sisli, Istanbul

+90 212 247 39 29


Technopark Campus
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945 Nebraska St.
Vallejo CA

+1 510 381 0850


Marina Twin Towers
Tower A, level 23 Doha

+974 3020 3028

Lullabies for My Baby

We produced Yumoş, the world’s first Bluetooth-enabled teddy bear that sings lullabies with its mother’s voice.

Lullabies for My Baby

4129Grey had found a formula that was like a lullaby for moms’ sleepless nights. Developed by “Llullabies to My Baby” The application used to make babies who wake up at night listen to a lullaby recorded by their mothers with their own voices, allowing the baby to calm down until his mother came to him. Thus, the application used to make babies who wake up at night listen to a lullaby recorded by their mothers with their own voices, allowing the baby to calm down until his mother came to him. In conclusion, taking the project one step further, we produced the world’s first bluetooh-enabled teddy bear that plays lullabies with its mother’s voice .


Our Goals

First of all, our goal is that the mother should not have to keep her mobile device near her baby during the night. The ability of the mollusk to carry out its duties physically on its own. In addition, the Fluffy bear in the baby’s room should not harm the baby’s health in any way. The microprocessor to be designed must be small enough to fit inside a Fluffy bear and have a battery life of at least 18 hours.

Our Solutions

With our circuit board, which we designed in line with the objectives, we made our modules as small as possible and designed a box that would not be noticed when we put it inside the Yumoş bear. For the sake of the baby’s health and to use the battery efficiently, we ensured that the Bluetooth module only works during the lullaby transfer. Since iOS doesn’t allow audio transmission via bluetooth, we worked our magic and found a solution that surprised even Apple.



Ultimately, the seamless synergy between our Yumoş bears and the “Lullabies for My Baby” application has garnered international recognition. Rigorous testing culminated in the prestigious N71 certification, affirming our commitment to excellence.


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Don't Be Limited by the Standard

You have a very different idea for your event, but the standard system of our product is not suitable for it? As Harikalar, we produce the software and hardware of all our products ourselves and we can easily make the changes you want for your creative ideas!

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Thanks to our cloud-based sharing system, videos and photos from your events are ready to share instantly. Thus, participants can scan QR codes or enter their e-mail addresses to download videos and photos to their phones or send them by e-mail.

Our Professional Team is With You

Experienced staff will be with you throughout your event, preparing and testing the products you rent according to your requests before installation. Also, our professional technical team will carry out all processes from installation to dismantling for you.

Get Service from Sector Pioneer Harikalar!

As Harikalar, with the unique experience of successfully completing more than 10,000 events since 2006, we transform your events from just a meeting, conference or celebration into unforgettable digital experiences for your participants; Because we are not just an event organization, we bring together excellence and extraordinary memories in every detail.

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You can get detailed information about our products and projects, you can get an offer from us to rent or buy. Our experienced team is looking forward to giving you the best service.