The Vodafone Mobile Connect Card UMTS is available as a USB stick and can only be rented with a PC or notebook.
You can get online simply with your credit card and without a contract

With the WebSessions International variant, you can also go online in many European countries, and with the WebSessions International Pro variant, in some non-European countries as well.

The connection costs are billed directly to Vodafone by the lessee based on usage.

The following connection tariffs are possible (as of 1st April 2016):

With WebSessions National, you can surf at up to 7.2 Mbit/s on the go.
The session ends after 30 days – or when the data volume has been used up.
You then simply book a new WebSession without needing a subscription.

WebSessionsBasic National (surfing with 200 MB volume) € 4.99,
WebSessionsS National (surfing with 1 GB volume) €14.99,
WebSessionsM National (surfing with 3 GB volume) €24.99,
WebSessionsL National (surfing with 5 GB volume) €34.99