The world's first real-time data provider for swimmers

One real-time assistant
for all types of swim trainings
Real-time recomendations
Get instant feedback and correct your body position, increase your pace or slow down while swimming.
Music player
Diversify your workout with your favorite tracks, become more motivated and reach your goals easier.
Bone-conduction technology
Hear your metrics even when your head is underwater and keep focusing on your technique.
Hear the metrics in swim time
SONR Tracker measures data from your temple and provides it to you during and after the training
Track how good you are when swimming underwater. This helps you to get faster and reach higher results at each lap.
Underwater time and distance
Have the possibility to assess the symmetry of your stroke and develop a perfect technique.
Symmetric Stroke
Monitor your heart rate and ensure you are training at the optimum intensity.
Heart rate
Analyse your swimming power points and increase the strength and power by every lap.
Stroke power
Other metrics you can hear
SONR Tracker is suitable for Pool as well as for Open Water trainings.
The listed metrics are tracked in both environments with the maximum accuracy.
Heart Rate
Swim Time
Stroke rate & Stroke count
Underwater time and distance
Turn time
Breath count
Swimming style
Stroke Power
Get your SONR Tracker now
Bone-conduction technology
Bone-conduction technology allows the swimmer to hear the metrics, receive feedback, correct his technique right in the moment and listen to his favorite songs being underwater.

Thanks to the tempo beep feature, the swimmer can easily identify and maintain the ideal pace.
Using different modes, the athlete can set the stroke rate and tempo, can monitor the pace in different intervals and set rates depending on strokes per minute.
How to wear it
Thanks to its sleek and lightweight design SONR Tracker does not cause any discomfort.
After just a few minutes of wearing, swimmers forget about the tracker's presence and fully focus on the training.
How it works
Choose the metrics you want to hear and the frequency of data delivery in your App
Place the SONR Tracker on your head. You don’t feel its presence and don’t worry about losing it
Hear the metrics while training and correct your swimming technique
Get the metrics analysed in daily report and share your results with your coach and swim mates
Get all the info in periodic reports
Build-up your training plan or use the SONR Tracker app's plans
Analyse your performance based on each metric and have a general overview
Be aware of your body condition, get recovery tips and know your limits
Export your workout to most popular platforms
Share your results with the running community and your coach. Compatible also with other iOS and Android apps
Tri Swim Coach
Training Peaks
Stay focused on every lap with your fave music
You have two ways to upload your tracks to SONR Tracker: via Bluetooth or by connecting the tracker to your computer.
Plug the USB cable into your PC. Drag and drop your fave audio files into the drive.
Upload music using connection to smartphone via Bluetooth.
Volume level flashes intermittently
Press 1x - volume up
Press 2x - volume down
After 5 seconds return to regular mode
Hold the button to turn SONR Tracker on/off
Press 3x to enter volume change mode
Press 1x to start/stop music
Press 2x to turn on the next song
Get your SONR Tracker now
Tech Specs
Weighting just 50g
2 years
Battery life
3 h without charging
Supports mp3, WAV, WMA, AAC, FLAC
8 Led indicators
2,4 x 0,55 in (61 x 16 mm)
50 g
ATM5 (Waterproof)
Water resistance
2 Years
iOS and Android app
1 Gb
3D digital gyroscope
IMU Sensors
3D digital accelerometer
IMU Sensors
Texas instruments
HR Sensors
3 hour
Battery life
Battery type
2 hours
Charge time
5V - 0,5А
4 pin Magnetic charging cable
Charging cable
Bone conduction speaker
Compatible profiles
Frequency response
96 ± 3dB
Up to 10 Days
Standby time
Bluetooth v5
Wireless type
1 button mode
Pace, Swim Time, Pool Time, Underwater time and distance, Breath count, Heart rate, Stroke rate, Stroke count, Turn time, Swimming style, Stroke power, Symmetric stroke
New Sensor from Texas Instruments
What swimmers say
"Finally, I have a device to listen to music and to track my progress. It's really efficient for the endless pool training."
Dave Collins
Swimmer, USA
"This device is fantastic for training. I love the battery life. I can hear with absolute clarity while I am swimming."
Jennifer Cook
Open water swimmer, Australia
"SONR Tracker is the best assistant! I find it really helpful to hear my heart rate and time while swimming. And it's accurate and reliable."
Samuel Evans
Competitive swimmer, UK
"The sound quality was really clear. I would definitely look to have SONR Tracker as a permanent feature that I could use on our camps, trainings and events."
Sharon Kim
Swimmer, Israel
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