I use it for BBT for fertility tracking. I didn't realize it didn't have a backlight, so when I wake up early, I have to use my phone screen light to read the temperature. But other than that, does the trick, it comes with a spare battery and you can't beat the price.
Fast & Accurate Digital Ear Thermometer For Adults, Kids & Babies - IProven DMT-511 [Forehead & Ear Mode, LED Display, Fever Alarm And 35 Memory Slots]
44 Review
Track Your Oxygen Levels And Heart Rate With IProven Fingertip Pulse Oximeter β Includes Battery, Case, And Lanyard In Blue
49 Review
Smart bracelet Xiaomi Mi Smart Band 5 Global, black
244 Review
Smart bracelet Xiaomi Mi Smart Band 5 RU, black
148 Review