Question about Zens wireless charger

I can't answer that, but I can say that I wouldn't buy the Charger again. The black surface is hard plastic and the area is very small. The charger is also powered by micro USB, which isn't really that great either. My Xiaomi wireless charger has about 50% more surface area, is nicely covered with soft rubber which holds the device in place, USB Type-C and even cost less (not bought at digitec).