Series

3Hz

“What if by listening to the past, you could save the future?”

★ 7.0(4)202123m3 seasons

3Hz isn't available to stream, rent or buy in Austria right now. Availability changes often, so check back soon. Availability checked 10 June 2026.

Where to watch 3Hz

🇦🇹 Austria

No streaming, rental or purchase options are listed in Austria right now. Availability changes often — try switching your region in the header.

Streaming in other regions

🇦🇷 AR🇦🇹 AT🇧🇪 BE🇧🇴 BO🇧🇷 BR🇨🇱 CL🇨🇴 CO🇨🇷 CR🇩🇪 DE🇩🇴 DO🇪🇨 EC🇫🇷 FR🇬🇹 GT🇭🇳 HN🇲🇽 MX🇳🇮 NI

Good to know

Release date: 2021-09-01
Runtime: 23m
Language: Dutch
Seasons: 3
Episodes: 39
Network: Ketnet
Status: Returning Series
Country: Belgium
Studio: deMENSEN

About 3Hz

3Hz is a 2021 web series in the Mystery and Kids genres, starring Junes Callaert, Cécile Enthoven and Arthur Hermans. It spans 3 seasons and 39 episodes, and originally aired on Ketnet. It holds an average rating of 7.0/10 from 4 viewers. Below you can see where to watch 3Hz in Austria — across streaming, rental and purchase options — along with the full cast, trailer and viewer reviews.

Synopsis

After Felix' walkman gets fixed with clock parts, he is able to hear the past with it. And he slowly finds out his mom's death wasn't just caused by a normal disease. With help from his friends he starts to investigate and discovers the devastating reason for his mom's death.