This Pedal is discontinued.
650MS ANALOG DELAY PEDAL
If your 616 has a green board inside, you have an EKKO 616.
If your 616 has a blue board inside, you have an EKKO 616 MKII.
Current draw is 50mA and operates on a 9V battery or optional 9VDC neg tip regulated power supply.
Malekko Ekko 616 Analog Delay