Digital Basal Body Thermometer, 1/100th Degree High Precision, Quick 60-Sec Reading, Memory Recall, Accurate BBT Thermometer for Natural Ovulation Tracking by iProven

I have bought this 2 times. The first one lasted 3 years, and maybe it would have gone longer if I hadn't lost the replacement battery - but alas I bought a new one instead. The new one worked almost identically for just over 3 months, and then started acting up. Obviously amazon return was out, and the manufacturer says 100 days full refund, but I was about a week over that when it quit. Given it also has a 2 yr warranty and I had used the other one for 3 yrs, I emailed the manufacturer and they quickly got back to me. They suggested a trouble shoot and offered id it didnt work they'd mail me a new one. The troubleshoot didn't work. After letting them know they immediately sent me a replacement without any struggle. I am impressed. So while my 2nd one did have issues, I give this 5 stars for history and a company standing by their warranty. The thermometer measures fast and accurately. The Last feature is nice.

For the price, this is a GREAT thermometer. Reads effectively, the beep is incredibly easy to know when it’s going. Takes one minute to read! Only thing it doesn’t have is a lit screen, so I usually have to shine a light on it.

This digital basal thermometer works excellently —it's accurate, reliable, and easy to use. However, there are two small drawbacks. First, the lack of a backlight makes it a bit tricky to read in the dark, especially first thing in the morning. I’d recommend the backlight version for easier use. Second, the power button is a bit hard to press, which can be inconvenient. Aside from these minor issues, it's a great thermometer!

Update 11/7/24: This company was super great to work with. They saw my complaints, and sent me an upgraded version of their thermometer to try. It works great! It lights up, the numbers are large, and the button is easy to press. And it's easy to look back later at the temperature that was taken to record later if I want to do it that way. The customer service was top notch, so I would order from them again now. Original review: I wouldn't order this again. I didn't realize that the temperature doesn't light up. So since I'm using it for taking BBT first thing in the morning before getting up, it's dark, and I can't see the temperature. So then I have to come back later to actually record the temperature. I don't like the way you have to hold the button down in order to get the prior reading instead of it just showing it like others usually do. Also, pushing the button is kind of difficult. I wish it was a bigger button. I also question the accuracy a bit since it measures way different than the other thermometer I had. I got it to have more precise measurement since my other one only measured to one decimal point, but this one will measure at least .5 degrees off from other other one.

Arrived quickly, as described, and works well. The display is plenty large enough to read, and lights up when you first turn it on, and again when it's finished the reading, but the nice part is it goes dark while in use so it's not shining in your face. It stores your last reading in memory and shows it when you first turn it on, in case you can't write it down right away. Easy to use, easy to clean, good design. The beep when it has a reading is not quiet, but much quieter than other models, and only one semi-long beep, not a persistent beeping. I wrap my hand around the bulbous end and it mutes it a little bit too. :)

Works great. Happy to tracking my bbt

Thermometer does as it should, reads temperature. I gave 3 stars because the battery died after 2 months of use. They do give a back up battery, which I was surprised to see, but now I know why. You can get the batteries cheap enough, you'll just have to be replacing them frequently if your using this thermometer everyday for tracking bbt.

The thermometer itself is great. HOWEVER! The thermometer comes with a replacement button battery. "Wonderful!" you may say. You would be wrong to say this. Exposed button batteries are deadly. They're very easy for a small child (the sort of human you may well have, if you're buying this sort of product) to swallow, and stomach acid makes a great short circuit. ERs do not like button batteries. SO BE CAREFUL WITH THE BATTERY. Or just throw it out (safely), the thermometer should last for years on the shipping battery anyway.