How To Charge Your Headphones

January 17, 2017

When you un-box your AfterShokz headphones, they’ll be 50 percent charged. Charge them for roughly one hour to reach 100 percent.

Trekz Titanium, Bluez 2S, Sportz Titanium, and Sportz 3 can all be charged using a micro USB. A micro USB is included with the headphones; however, any micro USB will do.

The charging port on the headphones is located under a protective rubber flap. You’ll need to peel back this flap to insert the connector.

You can plug the USB end into a computer or into a USB wall charger. The charger cannot exceed 5.25 volts.

When fully charged, the LED light will turn blue.

To protect your headphones from damage, moisture, or debris, remember to secure the protective rubber flap over the charging port back in place.

For more information on charging your headphones, contact

Size Chart

Step 1


Important: make sure your printer is scaled to 100% on a standard 8.5” x 11” page.

Step 2

Cut out the measuring tool using the dotted line as a guide.

Step 3

Hold the left side (L) behind your left ear and stretch the tool across the back of your head (toward your right ear).

Step 4

If the white section of the sizing tool is touching your right ear, choose Trekz Titanium Mini.

If the the orange section of the sizing tool is touching your right ear, choose Trekz Titanium.