I have to get the battery charger set free for the test. Namely, it is the product of white, the battery charger set for Mini Dual Go Pro 4. In this case, the charger, 2 batteries (AHDBT-401), 1 microUSB cable and a user manual. (In German) The first impression when you unpack the charger. Plastic fairly simple, look quite cheap. But after the first appearance you can not go. Built quite stable but the charger. Think if it is dropped from the table, this makes the charger from nothing. The charger is used for connecting a USB cable. To load on different devices such as USB power adapter, USB car charger, computer, laptop .... would be nicer if a USB power supply this would be in the set. The Weiss batteries with 1160mAh 3.8V and not only look quite stable, they are too. The batteries go easily in purely on the charger. But are still firmly in the shaft that they can not slip out so. USB cable to the charger and PC and off you go. LEDs display, red for charging, green for full. The LEDs are inserted between the two batteries. You may also be elsewhere, for a better view. Summarized. Good price and good performance.