Development of the modern technologies challenged the designers to create separate collections for children. OTL Technologies is a company based in London, and is specialized upon inventing and producing audio accessories and various electrical items, including headphones, party speakers and so on for children. One of the key advantages of this designer, apart from the quality of the products, is the design, related to the world famous brands of Hello Kitty, Sponge Bob Squarepants, Peppa Pig. These are all the characters, which are perfectly known to all children all over the world. Hello Kitty mini speaker is one of the bright examples of their collection. The speaker is compatible with any device using a 3.5mm headphone jack, which increases its functionality and the situations when it could be applied. It is completed with a battery, which could be recharged with the help of USB port. It is able to play up to five hours in a row. For children over 3 years old this would become a great present. A portable speaker from OTL is also designed with Hello Kitty thematic prints and is designed in such way that it is really easy to organize transportation of it.