Specifications: Type:Dual charger Color:Black Materrial:Plastiic 5V--2A(max) 8.4v--600mA(X2) Instruction: 1. Insert 1 or 2 Camera Battery to the socket of the USB Dual Charger. 2. Use the provided USB cable to connect the USB plug to any 5V Power Source. 3. Connect the Micro USB plug to the DC input port of the Dual USB Charger. 4. When charging, the LED Indicator will show red, when charged fully, the LED indicator will turn green. 5. After Battery fully charged, pls disconnect the USB plug from 5v power Source and then take out the battery from the USB dual charger. 6.Compact portable Design,convenient for travlers and business users. Dual ChannelDigital Battery Charger For Nikon For Nikon D7100 D7200 D7000 D8000 D510 D610 D600 D800 . For Nikon D7000 D800E V1 MB-D11 MB-D12 Note: Adapter is not included. Before using this battery charger, read this manual carefully and make sure you understand completely all instructions, safety rules contained in this manual. Batteries and USB plug are not included. Please check your battery charger voltage.