Hear underwater.
Learn to swim faster.

Meet SONR - an innovative communication system.

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Early bird price ending soon! Up to 35% discount available till June 15th.
Train all your team
without shouting
Your swimmer hears you underwater
Help your swimmers follow the right pace
You don’t break your voice
Correct your swimmer in real-time
You can talk right when you need it

Real-time swim coach headset

No need to shout anymore,
the swimmers hear you anyway
Before, swimmers could not hear the coach because their ears are underwater.
Now, swimmers hear every coach's word with SONR.
Prepare Your Swim Team for the most Effective Training

Buy colorful SONR Sets with 10% OFF and Get a SONR Bag as a Gift. Use promo code Bag.
Or Request up to 45% OFF on bulk orders!

Hear underwater.

Bone conduction delivers clear sound directly to the inner ear.

You hear the same great sound no matter where Sonr is placed on the head.
Designed for swimmers
How to wear it?

Thanks to its sleek and lightweight design SONR does not provoke any discomfort.

After just a few minutes of wearing, swimmers forget about the receiver's presence and fully focus on the training, with the coach available to guide them.

SONR can be placed anywhere
on the swimmer's head
under the cap.
Don't like wearing a cap? SONR can be fixed on your goggles strap.
Real-time coaching

Bone conduction technology allows the swimmer to hear the coach's voice being underwater.


The coach can correct the swimmer's movements right when he needs.

Everything included
Full set.

SONR starter kit includes:

SONR Receiver
Radio Transmitter
Chargers
Goggle Clip
Help all your swimmers
Rally your team

Connect to an unlimited number
of SONRs with a single radio.

Manage whole teams in real time, on 6 different channels. Switch channels on the radio, and talk to all swimmers at the same time, or specifically with one of them, or divide them into groups.

Up to 5 coaches can use SONR system simultaneously at the same pool.

Most effective swim workouts

Maximize swim training effectiveness by discovering innovative way of swim coaching. With SONR, it is easy to provide instructions, corrections, and feedback on the spot.

Distance
Up to 300 m
Underwater
Up to 1 m
Real-time
Communication
Unsinkable &
Lightweight
High Quality
Materials
No swim
Resistance
Ergonomic
Design
Can be used
in any water
Tech Specs
SONR Receiver
  • Receiving distance open water: above 650 ft (300 m)
  • Receiving distance in a pool:
    above 165 ft (50 m), under 3 ft
    (1 m) water
  • Dimensions: 2,4 x 0,55 in (61 x 16 mm)
  • Weight: 0,52 oz (30 g)
  • ATM5 waterproof standard
  • Battery life: Up to 3.5 hours (mixed-use), 1.5 hours (talk time)
  • Magnetic charging cable
  • Led indicates battery status, charging and power status (on/off).
Radio Transmitter
  • High and Low power
  • Dimensions: 5,3 x 2,2 x 1,4 in
    (135 x 57 x 35 mm)
  • Weight: 8,8 oz (250 g)
  • IP54 water and dust protection
  • Battery: 3000 mAh
  • Earphones inset
As seen in the press
Testimonials
Pros about SONR.

SONR really helps working with advanced level and distance swimmers. It’s good for private lessons and swimming sets.
I recommend this product.

Konstantin Petrov
Olympic Bronze Medalist
World Class Coach

SONR is compact and easy to operate. The sound is clear and it works at a great distance. I want to purchase SONR as early as possible, so I wouldn’t have to raise my voice in a noisy pool anymore.

Arkadiy Mishchenko
Professional Technical Coach,
Ukrainian National Team

I love the small size, sleek shape and the design of the device. It is comfortable, unnoticeable under the cap and doesn’t add resistance while swimming.

Vladimir Curinnoi
Professional Swimmer,
WSI Water Safety Instructor

I would recommend this product to professional swimmers and their coaches who are enthusiastic and eager to improve results at a faster rate. Thanks for a wonderful invention, SONR!

Valeriya Curinnaia
Master of Sport,
Experienced Coach

We found it was really helpful from a coach’s point of view for giving the swimmers feedback in real-time as they were moving along. The sound quality was really clear. I would definitely look to have SONR as a permanent feature that we could use on our camps.

Kat Berry
Triathlon coach

This device is fantastic for pool training because the swimmers can hear with absolute clarity while they are swimming.

Christine Haslem
Occoquan Swimming Open Water Coordinator and Coach

We were very impressed with how easy it was to get started, how comfortable it was when wearing it, and how effective it was when communicating with our athletes in the water.

Jason Hunter
George Fox University
Assistant Coach

We were very pleased with the SONR system, as it brings communication in swimming to the next level.We plan to utilise this with our open water swimmers, so more information can be provided to the swimmer.

Mark Wieland
Head Coach, President
Tivoli Swim Team

I really enjoyed using the SONR unit. It definitely enabled me to make quicker, easier and more precise instructions to athletes on the go, while also being able to give feedback clearly.

John Wood
British Triathlon Coach Level 2
British Swim Coach Level 3

I’m very surprised by what SONR helped me to achieve in training!  I was asked by a lot of swimmers what device I was testing while using SONR and they were impressed as well.

Andreas Onea
Swimmer
Austrian Disabled Sports Association

Great concept which could have many uses by the innovative coach. I showed it to the local triathlon coach and he felt it provided good opportunities for him and his athletes. Other possible adoption could be in Synchro and also games sports like underwater hockey.

Matt Magee
Head Coach
ONEflow Aquatics

It's awesome tool for coaching and motivating swimmers during their sessions. You can remind swimmer what to focus without stopping them, you can keep swimmer updated when they swim long set with time and pace. I'm using it also with complete beginners and it helps them to get the timing of their moves right.

Lukas Lindner
Swimming coach
Consultant

We use SONR with our college team and our campers when we are teaching technique. It’s awesome to be able to communicate with the swimmer while they are attempting to make stroke improvements. It’s easy to provide feedback in real-time.

Matthew Barany
Head Swim Coach
University of Richmond

I enjoyed testing this product,  I teach swimming and the kids could easily hear me.  Furthmore, the device was easy to use, younger kids did not even realize it was under their swim cap

Brenda McLuskie
Swimming Coach
Get your SONR Set now.
Pre-order now for an exclusive early bird price
Basic set includes receiver and radio transmitter.
Testimonials
Pros about SONR.

SONR really helps working with advanced level and distance swimmers. It’s good for private lessons and swimming sets. I recommend this product.

Konstantin Petrov
Olympic Bronze Medalist
World Class Coach

SONR is compact and easy to operate. The sound is clear and it works at a great distance. I want to purchase SONR as early as possible, so I wouldn’t have to raise my voice in a noisy pool anymore.

Arkadiy Mishchenko
Professional Technical Coach,
Ukrainian National Team

I love the small size, sleek shape and the design of the device. It is comfortable, unnoticeable under the cap and doesn’t add resistance while swimming.

Vladimir Curinnoi
Professional Swimmer,
WSI Water Safety Instructor

I would recommend this product to professional swimmers and their coaches who are enthusiastic and eager to improve results at a faster rate. Thanks for a wonderful invention, SONR!

Valeriya Curinnaia
Master of Sport,
Experienced Coach

We found it was really helpful from a coach’s point of view for giving the swimmers feedback in real-time as they were moving along. The sound quality was really clear. I would definitely look to have SONR as a permanent feature that we could use on our camps.

Kat Berry
Triathlon coach

This device is fantastic for pool training because the swimmers can hear with absolute clarity while they are swimming.

Christine Haslem
Occoquan Swimming Open Water Coordinator and Coach

We were very impressed with how easy it was to get started, how comfortable it was when wearing it, and how effective it was when communicating with our athletes in the water.

Jason Hunter
George Fox University
Assistant Coach

We were very pleased with the SONR system, as it brings communication in swimming to the next level.We plan to utilise this with our open water swimmers, so more information can be provided to the swimmer.

Mark Wieland
Head Coach, President
Tivoli Swim Team

We use SONR with our college team and our campers when we are teaching technique. It’s awesome to be able to communicate with the swimmer while they are attempting to make stroke improvements. It’s easy to provide feedback in real-time.

Matthew Barany
Head Swim Coach
University of Richmond

I’m very surprised by what SONR helped me to achieve in training!  I was asked by a lot of swimmers what device I was testing while using SONR and they were impressed as well.

Andreas Onea
Swimmer
Austrian Disabled Sports Association
Credits to: ÖBSV

I really enjoyed using the SONR unit. It definitely enabled me to make quicker, easier and more precise instructions to athletes on the go, while also being able to give feedback clearly.

John Wood
British Triathlon Coach Level 2
British Swim Coach Level 3

Great concept which could have many uses by the innovative coach. I showed it to the local triathlon coach and he felt it provided good opportunities for him and his athletes. Other possible adoption could be in Synchro and also games sports like underwater hockey.

Matt Magee
Head Coach
ONEflow Aquatics

It's awesome tool for coaching and motivating swimmers during their sessions. You can remind swimmer what to focus without stopping them, you can keep swimmer updated when they swim long set with time and pace. I'm using it also with complete beginners and it helps them to get the timing of their moves right.

Lukas Lindner
Swimming coach
Consultant

I enjoyed testing this product,  I teach swimming and the kids could easily hear me.  Furthmore, the device was easy to use, younger kids did not even realize it was under their swim cap.

Brenda McLuskie
Swimming Coach
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