Excellent portable charger for many USB devices to charge your camera or phone on the go and power it at the same time. Includes 4 duracell batteries also.5-6v dc voltage
This Has an on off switch, & a led on switch which is power on also for your device.
It will not power a contour camera though, only will charge the internal battery.
Works great & tested on the sony hdr-as10 15,30 hdr-as100v, hdr-az1, fdr-x1000v, panasonic 4k drift hd, gopro hero4, hero3, hero2, black silver & white etc.
