The inspiration behind the development of the Logosease underwater transceiver came from one of our employees, the inventor, who felt disappointed during his first dive with his 10-year-old daughter. They couldn’t share simple phrases like "This is fun!" or "Isn't it beautiful?" while underwater. In a world where we are all connected by the internet, it seemed strange that you couldn’t communicate with someone right next to you underwater.

Why can’t divers talk underwater? The answer is simple: divers must hold a breathing apparatus in their mouths, making it difficult to speak, and human voices, which travel well through air, don’t carry effectively underwater.

Still, the question remained—why had divers so easily accepted the inability to talk? The answer was clear: there was no tool to solve this problem. Some even seemed to believe that diving was enjoyable because words weren't necessary. However, underwater activities come with inherent risks, and relying solely on basic hand signals or written notes for communication didn’t seem like the ideal solution for safe and enjoyable leisure diving.

The concept for Logosease was simple: it needed to be compact and easy to attach or remove, wireless and durable, non-intrusive to regular diving gear, and affordable. In other words, it was designed for recreational divers to use easily.

However, realizing this concept took three years. The biggest challenge was developing the product for an environment as familiar yet as unique as underwater. On land, existing measuring devices allow for limitless experimentation, but such equipment can’t be used underwater, and the actual time spent working during a dive is limited to about an hour. We invested significant time and effort. The development of the microphone was especially challenging. Since no underwater microphones existed to capture human voices, we had to start not just from scratch but from zero, experimenting over and over. We finally settled on a bone conduction microphone that captures sound from the diver’s face, but its sound quality and volume varied greatly depending on placement, and there were limitations on where it could be mounted.

After overcoming these challenges, Logosease was completed and launched in 2013 as the world’s first underwater transceiver for recreational divers, earning high praise, including a Good Design Award.

Although Logosease was developed for recreational divers, sales struggled at first. However, unexpectedly, it was adopted by water rescue teams in police and fire departments before recreational divers. In life-or-death situations, the importance of underwater communication is obvious, and while underwater communication devices did exist, they had drawbacks such as being bulky or wired, making them prone to failure. On the other hand, Logosease, being compact, durable, and non-intrusive to other equipment, was ideal for diving in harsh environments. Its affordability compared to existing products was also a major factor in its success.

Despite its success with rescue teams, sales to recreational divers continued to be a challenge. While divers understood the benefits of being able to communicate underwater, the actual experience of using the device sometimes didn’t match their expectations of voice clarity and quality. However, having repeatedly used Logosease throughout its development, we had experienced firsthand that with practice, speaking and listening underwater became second nature.

To encourage divers to keep using Logosease until they became accustomed to it, we decided to develop a new model with features that would benefit all divers. This led to the creation of Logosease II, equipped with a "voice alert function" that provides audio notifications of important dive information such as depth and time.

Since Logosease was already capable of handling voice transmission, all we needed to do was add sensors and program algorithms similar to those found in dive computers to relay dive information via audio. Traditional dive computers require divers to actively check the readings, which carries the risk of neglecting to do so. However, with the voice alert feature of Logosease II, divers are automatically notified when they reach a preset depth or time, helping to prevent oversight.