Swim coach communicator - SONR Coach

Every discovery begins with a thought. Isaac Newton had an apple fall on his head, and a thought occurred that revealed gravity to the world. The thought of SONR came to Dmitry Voloshin, and now SONR Inc is proud to announce the launch of the best swim coach communicator that will become the swimming revolution.

It was created to overcome the main obstacle in swim coaching - the difficulty in real-time communication from the coach to the swimmer. Until today, the coach was forced to shout, make signs, or even wait for the swimmer to finish the lap and only then correct the mistakes. This leads to precious training time being wasted on waiting and repeated mistakes making the training process substantially less efficient. Now thanks to SONR, the coach can communicate with the swimmer in real time, loud and clear.

SONR is the world's smallest wearable underwater communicator for swimmers, which allows the coach to improve their technique, during the training even when the swimmer's head is underwater.

SONR can be placed anywhere on the swimmer’s head - under the swimming cap or on the goggles’ strap using a special included clip. Thanks to its sleek and lightweight design SONR looks great on a swimmer’s head. After just a few minutes of training, the swimmer forgets about the presence of SONR staying in direct contact with the coach fully focused on the training.

Operating principle

With SONR bone conduction device real-time communication underwater is no longer a fantasy but a reality. The coach talks into a radio transmitter while the swimmers hear the voice even when their ears are underwater. Using this swimming communication system the coach can train big teams, guiding the whole group, a few athletes, or some of them separately at the same time. 

Advantages of SONR compared to bone conduction swimming headphones

What distinguishes SONR from its competitors is that it’s unsinkable, waterproof, has a built-in metronome function, can be used in any type of water, has a unique design and what is most important, SONR is created for real-time coaching.

Waterproof headphones are ordinary headphones with waterproof components inside. Nearly all of them are used for listening to music. SONR offers a professional solution - this is another level of using bone conduction technology in swim training.

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The length and depth of signal receiving make SONR stand out from the competitors. The depth where the signal reaches is almost 2 times bigger than that of competitors. SONR signal receiving depth is 1m. This makes it useful not only for swimming but also for other water sports such as synchronized swimming.

The main inconvenience that users of headphones talk about is the earbuds. They often fall out during intense freestyle. Because of the specific structure of the ear, it is difficult for some people to put them in. SONR can be placed anywhere on the swimmer’s head - under the swimming cap or on the goggles using an included clip.

Swimming headphones wires are thin and can be damaged too soon. SONR has no wires as it works on bone conduction technology.  

Swimming headphones often work on the Bluetooth option, and this is not the best way of connection for use underwater. In this case, the water is a hindrance, so the signal is blocked. Radio waves can pass through the water thickness.

We offer a large selection of sets, as well as the opportunity to purchase SONR receivers and radios separately or place a bulk order.

Technical parameters

SONR swimming communication system is provided by a receiver and a transmitter. 

SONR Receiver is a bone conduction device for swimmers which has the next specifications:

Its receiving distance in open water is above 650 ft (300 m), in a pool is above 165 ft (50 m), and underwater receiving distance is 3 ft (1 m). The receiver weighs only 1,05 oz (30 g) and meets ATM5 waterproof standard. SONR can be used for up to 3.5 hours without charging. It is equipped with a led that indicates battery status, charging, and power status. 

SONR Radio Transmitter has IP54 water and dust protection. Battery capacity is 3000 mAh. High and low-power earphones can be inset. 

SONR will take water sports to the next level! Every one of the thousands of swimmers and coaches who tried SONR would never go back to previous methods of swim training.