Follow these steps to optimize your fit and experience 
with the SF600 headphones:
Choose Size for Comfort 
Try the different sizes to find the most comfortable fit.  
Every ear shape and size is different, so start with the 
largest size as larger cushions will produce better 
audio performance.
optimize for sound
Try the two different designs and choose the best for 
your workouts and listening experience. The grooved 
design allows for some ambient or external sounds 
to be heard and will lessen workout noise from wires 
or body movement. The smooth design will result 
in richer, deeper bass.
Personalize for Stability
Use different ear gel designs during workouts to make 
sure you get the most stable fit.
Tip: Make sure to rotate the ear bud to secure cushion 
in ear. This will improve comfort, stability and the 
overall listening experience.
Get your Music Going
1. Charge product fully before each use.
2. Put on headphones by looping the ear hooks over 
your ears so they are stable and comfortable.  
Rotate the ear stems to find the best fit.
3. Press power button on left module and follow voice 
prompts to get started.
Tip: Be sure to 
completely close the 
USB charging cover to 
protect it from water 
or sweat damage.
Small
Smooth Grooved
Medium
Large
Outdoor Usage Tips:
When you are outside your Bluetooth signal may 
be affected by your environment - open spaces 
and where you keep your music device.
- Enhance your outdoor experience by placing 
your music device above your waist.
- If you experience choppy or distorted audio, try 
moving your music device to a different location 
to prevent the signal from being blocked by your 
body or other objects.