English term
Portugal
IT, SW, HW, Tech, Gaming, Medical, Vet
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, German to Portuguese, Spanish to Portuguese
step movement
I am finding some related terms in portuguese, but I am not sure if any is related to step movement.
Proposed translations
United States
Translator/Chemist/Engineer (BSc/MSc)
Native in: Portuguese (Variant: Brazilian) 
Works in: English to Portuguese, Portuguese to English, Italian to Portuguese
com tic-tac (audível) / com marcação de tempo (audível)
https://bagby.co/pages/how-does-an-analog-alarm-clock-work
É o tic tac do relógio.. foi a melhor forma que achei para descrever.. não sei se tem um termo mais apropriado
Brazil
Expert in language service for HR
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Spanish to Portuguese, Portuguese
Mecanismo dos movimentos (pêndulo e de outros acessórios que requerem movimento"
--------------------------------------------------
Note added at 1 hora (2020-07-01 23:59:33 GMT)
--------------------------------------------------
Acho interessante complementar o texto para melhor visualização.This movement have a separate metal hanger to hang your clock. Our step movements are almost silent, but will make a soft ticking sound. When you buy a NeXtime movement, you know for sure you don't have to worry about the quality. We are using high quality Taiwanese movements that are carefully selected to make sure your clock is always running in time for many years.
Step Movement This step movement is suitable for almost every clock! Most clocks use Step movements, because they are strong and very accurate. This movement have a separate metal hanger to hang your
German to Portuguese translator
Native in: Portuguese (Variant: Brazilian) 
Works in: German to Portuguese, English to Portuguese
movimento por etapa
https://pt.qwe.wiki/wiki/Movement_(clockwork)
http://www.newlooktimeblog.com.br/marcas/bulova/relogio-bulova-precisionist-new-look-time/
Brazil
Generalist, SDL TRADOS! Engagement!
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
passo-movimento / movimento de passo
A maior parte das traduções no Brasil utilizam "passo-movimento"
12888 Movimento De Quartzo Padrão Passo Movimento Relógio de Parede
https://portuguese.alibaba.com/product-detail/12888-standard...
Alta qualidade 1688 relógio de pêndulo mecanismo ABS passo movimento do relógio de pêndulo de quartzo
https://portuguese.alibaba.com/product-detail/high-quality-1...
https://www.seiko.com.br/v1/world/technology/quartz/index.ht...
Discussion
https://torres.pt/faqs/