: The sound of a vintage twin-bell alarm clock hitting metal.
: Sounds like rushing water or birdsong for a "gentle" wake-up.
: Most modern phones (Android/iOS) prefer MP3 or AAC. If you have a WAV file, you may need to use a mobile "Ringtone Maker" app or a simple online converter to make it compatible with your phone's clock app. A Quick Tip on Licensing Most "free" sites use Creative Commons licenses. CC0 : Public domain (use it however you want).