Opal is a specialized audio player that lets you play one of 20+ built-in relaxing tracks for as long as you want, without interruption. The audio tracks include: rain, wind, thunder, river, fire, various office background noise such as typing, chatter etc. There’s also a timer feature that helps stop the audio player after a preset interval.

Opal is a specialized audio player that lets you play one of 20+ built-in relaxing tracks for as long as you want, without interruption. The audio tracks include: rain, wind, thunder, river, fire, various office background noise such as typing, chatter etc. There’s also a timer feature that helps stop the audio player after a preset interval.

Opal is a specialized audio player that lets you play one of 20+ built-in relaxing tracks for as long as you want, without interruption. The audio tracks include: rain, wind, thunder, river, fire, various office background noise such as typing, chatter etc. There’s also a timer feature that helps stop the audio player after a preset interval.