onn Portable Battery Single Charger Kit with USB-C to USB-C Charging Cable for Smart Watches, 1 ft Cord

This holds a strong charge, lasts forever. I don't even know how many times I've charged my watch on this thing and haven't even had to recharge it yet. It still has 2 light dots on it. It also charges pretty quickly like I went from 8% to 80 in like an hour.

Very convenient to take with me when I travel. I can keep my watch charged even when I am out and about, and I don't have to worry about getting back to my hotel to charge it up.

Easy to use and holds good charge. Works well

This is a niche item that fulfilled the need I had. I needed a battery backup for my Apple Watch. It works fine and seems to charge my watch 3-4 times before needing to be recharged itself. I dislike how weak the magnet is; the watch is VERY easily bumped off of the charging divot. So, I can't use it in my car because it just falls off—unless I build a literal fort around it (with my purse, napkins, whatever I have available in the car). Really wish the magnet was stronger for that purpose. Otherwise, I think it's an awesome gadget and I'll be using it until it no longer works! Very giftable, too!

Great option for portable power. The official cord is like $24 this is a little more but not too much. Some reviews state power didn't come on. Directions state put watch on charger THEN push power button. It has worked every time for me.

Works fine but you'll probably only get one full charge for your phone or watch, not both. Capacity is only 3,500 mah. Not worth the price they're charging.

Worked a total of once. It will Charge when hooked up to the power source, but I need one for on the go. This is supposed to Bank the power for charging later. No luck.

It did not charge my watch

Want my money back. Not worth the money. Broke after charging my watch 1 time.

Doesn't work