Imprint
Last updated: February 10, 2026
Company
Sumosmash UG (haftungsbeschränkt)
Operating as: HALVDAY (halvday.com)
Seydelstr. 12
10117 Berlin, Germany
Contact
Email: hello@halvday.com
Management
Managing Director: Christian Gruber
Commercial Register
Amtsgericht Berlin-Charlottenburg
Registration Number: HRB 159301 B
VAT Identification Number
DE321237036
Supervisory Authority
Berlin Chamber of Commerce and Industry
Professional Liability Insurance
Allianz Versicherungs-AG, coverage for Germany and the EU.
Dispute Resolution
The European Commission provides an online dispute resolution platform: ec.europa.eu/consumers/odr. We are not obligated to participate in consumer arbitration proceedings and do not do so voluntarily.
Liability for Content
As a service provider, we are responsible for our own content on these pages under general law. We are not obligated to monitor transmitted or stored third-party information or to investigate circumstances that indicate illegal activity. Obligations to remove or block the use of information under general law remain unaffected.
Copyright
The content and works created by the site operators on these pages are subject to German copyright law. Downloads and copies of this site are only permitted for private, non-commercial use unless otherwise stated.