This system works wonderfully for the following Panasonic digital cameras:
DMC-FZ1000, DMCFZ1000
DMC-FZ200, DMCFZ200, FZ200
DMC-FZ300, DMCFZ300
DMC-G7, DMCG7
DMC-G6, DMCG6, G6
DMC-G5, DMCG5, G5
DMC-GH2, DMCGH2, GH2
DMC-GH2K DMCGH2K, GH2K
DMC-GH2S, DMCGH2S, GH2S
DMC-GX8, DMCGX8, GX8
DMC-G81, G81
DMC-G80, G80
DMC-G85, G85
and more models
Usually this DC coupler is working with an AC power adapter that with DC 8.4-8.7V output. When you want to long time shooting outside without AC outlet, then you'll feel it's not convenient. Also you can use with a DC 8.4V power bank, but it's not easy to find a DC 8.4V power bank, and it's expensiver.
So we provide this solution, with our coupler and customized USB cable built-in intellgent circuit board(improve DC output from 5V to approx 8.7V), you can connect this USB with DC 5V 2A power source. It's easy to find a DC 5V 2A power bank, and DC 5V 2A power bank is much cheaper than a DC 8.4V power bank.