-LCD display charging indicator, when the charger starts, socket ch1 / ch2 battery, screen ch1-ch2 lights on.
-Mini USB dual slot charger, can be charged two batteries at the same time.
-With safety circuit design, overcharge , overdischarge , shortage , safe to use.
-Can use USB power source, including your computer, to drive dual chargers.
-Safe and reliable for use in travel and outdoor activities,Suitable for Nikon V1 D500 D600 D610 D750 D800 D7000 camera battery.