Eko Core User Manual Steve Avila June 28, 2017 18:43 Updated Follow User Manual Last Updated: Feb 09, 2016 04:28PM PST Click HERE to see our User Manual . Related articles Ensure the best audio quality with the Eko Core What is included in the Eko Core and Eko Core Bundle packages? Choose a tubing adapter (Narrow, Slim, or Straight Fit) What are the Eko Core modes and corresponding LED states? How do I charge the Eko Core? Comments 0 comments Article is closed for comments.