Pricey, But Well Made and Nice Tone
I have been wanting to get back into meditating this past year and this timer helped me. I am experiencing the usual ragged sessions as one can experience when getting back into daily practice. The tone is soothing and you can set it to ring at intervals.  Currently, I have it set for 30 minutes, which starts and ends with 3 tones then every 5 minutes in between.  I prefer the gentle tone because it takes me back to my breathing very nicely without startling me. I agree with the other reviews that this product is pricey and there is no volume control, but I couldn't find another timer on the market that provides interval tones.  The good news is that it is portable and I am meditating!
Rating: 4 stars