Here's what Mooer says about the D7 Mini Delay Pedal:
The D7 Delay is the redesigned multi-delay effects pedal from the Micro Series. Using the 7 signature LED lights as a guide, this pedal houses 6 customisable digital delay effects with the seventh LED indicating the built-in looper that can be used in tandem with any delay setting.
Like the other pedals in the series, all of these effects are tweakable and can be stored for your convenience. Tap tempo functionality allows you to easily set the desired delay timing and of course, with the “Trail On” feature, delay effects fade out naturally and organically.