Questions about Rolling Square Tau 2 Keychain Charger

The items do not differ in terms of their functions and technical specifications. The price difference results from the fact that we purchase them from different suppliers and have different purchasing conditions depending on the supplier and the offer.

It is a practical emergency power bank. A charging station (without mains plug) is supplied. The power bank is sufficient as a stopgap if you don't have the opportunity to charge it.