Portable Power Supply For Speaker

Does not require a power supply.Very portable.

I'm just using it with a portable phantom power supply, so it may be that it's just not drawing much, but I was still surprised at how long it lasts.

It's a power supply.

This is just the portable ticket to supply phantom power to my mic. It is light weight, tales a 9 v battery and was a great price! It works very well!

I've had several WD external drives. All have been portable, and never have they failed although they do get a bit warm. This is the first one with its own power supply which keeps them cool. It's formatted for Mac

Small, portable and extremely useful in places whe power supply problems exist

Using as a portable power supply for a photobooth. Works great with plenty of power leftover for those 4-5 hour events.

I was looking for a small portable HD to use on the road and this one was the solution. I don't even have to carry the power supply with me since it is buss powered. I've been able to edit HD footage without any hiccups. Great storage unit and I would highly recommend purchasing this G-Raid product.

After much research, chose the EcoFlow River Pro for use as a portable power supply while outdoors and for use during power outages. Super easy to use and powerful enough to keep several appliances going for hours. Great little unit.

Now I can take my telescope anywhere with this portable rechargeable power supply. It's also helpful with the accessories for emergencies with it's flash light for any roadside emergencies. According the product description: the company specially designed this product with the amateur astronomer in mind! That makes my viewings easier as an amaetuer astronomer!