Very good portable battery with a charging capacity of up to 100W of power. Useful for charging laptops and anything really. It has a slow charging mode ideal for wireless earbuds and things with small batteries like PlayStation controllers. It says it has 20000mAh but in my experience it charges a Samsung Galaxy S24 about 4 times and little more, so the actual capacity is closer to around 18000 rather than 20000. But come on, this usually happens with all power banks. It is quite large but thin so it can be carried well in a backpack or laptop bag.