With the ability to have the verse repeated through your headphones until you choose to pause or stop it. This would help with remembering specific scriptures but also meditating on particular parts of the bible.
For example I want to meditate on psalm 37:3 trust in the Lord and do good, so shalt thou be in the land, and verily you shall be fed. This would repeat over and over until I've meditated enough and push pause or stop/close button. Helpful for memorising too!