Audible 12 note chromatic scale built into the watch for tuning (requires speaker)

It would be great to have a single note ring out for tuning purposes or to check the key of songs. For example, if I hear a song and I'm not near an instrument, I would like to be able to check the key of the song with my watch (i usually check the pitch using a keyboard app on my phone, but I'd rather not use my phone and be able to use just the Soundbrenner instead.) An audible pitch would also allow me to tune other instruments by ear (ex. guitar, violin, bass, horns, etc.)

Changed the title from "An audible 12 note chromatic scale built into the watch for tuning" to "Core: audible 12 note chromatic scale built into the watch for tuning (requires speaker)"