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Make sure that bluetooth is turned on to pair your Koss TWS250i True Wireless Earbuds.

How To: Pair Your Koss TWS250i True Wireless Earbuds

Watch below to learn how to pair your Koss TWS250i True Wireless Earbuds to your smartphone, smartwatch, tablet, lapt... more

Charge your earbuds and case before using the Koss TWS250i.

How To: Maximize Koss TWS250i Battery Health

"Battery health is different than battery life. Battery life determines how long your battery lasts on a single char... more

Koss TWS250i True Wireless Earbud with bluetooth 5.0

Koss TWS250i True Wireless Earbud Features

The all-new Koss TWS250i True Wireless Earbuds feature Bluetooth® 5.0, 4.5+ hours of listening time (11+ hours with ... more

Introducing: Koss TWS250i True Wireless Earbuds.

Introducing: Koss TWS250i True Wireless Earbuds

  Truly Wireless. Truly Wonderful. The all-new Koss TWS250i True Wireless Earbuds deliver an expansive soundscape wi... more

Man drawing a diagram of the Porta Pro

Design Stories: Porta Pro

SHOP PORTA PRO® COLLECTION   For over 30 years the acclaimed Koss Porta Pro® has set performance and comfort standa... more

Image of the Koss Pro4AA, Porta Pro, and KPH30i in their rhythm beige edition colorways..

The History of Rhythm Beige

In 1970, Koss set the standard for full-size professional headphones with the iconic Pro/4AA. At the time of their ... more