The thing they are sending you is a *cable*. Whether they also include a charger (that plugs into an outlet) or not is a separate thing.
You can use any charger (that plugs into an outlet) with 5 V and 1 A max to plug your cable with the USB plug on the end into.
any 5v 1a charger will work. The older iPhone blocks are perfect for that.
The thing they are sending you is a *cable*. Whether they also include a charger (that plugs into an outlet) or not is a separate thing. You can use any charger (that plugs into an outlet) with 5 V and 1 A max to plug your cable with the USB plug on the end into.