I was scrolling through some vintage (!) Memovox models and found out that the sound of some models is different than others. Theres one kind of ring that sounds more like a bell, and then there is this Vulcain Cricket type alarm. How do I know which model has which kind of sound?

Here are examples for better understanding: Cricket type: https://youtube.com/shorts/VA4j9KMQBaE?si=m-oomETjeMW3_cQM

Bell type: https://youtube.com/shorts/AqBa7UBekMo?si=DPFetZOGbLKmmbE0