AI_toothbrush

I want to build a linux(yes i want linux specifically or a deritive of it) smartwatch as a prototype that lasts ~24 hours. Ive been looking for chips that are small and power effient enough but most of them cant run linux. If i have a 400mah battery that gives me a power budget of about 60mw... I know its possibly because there are wearos(basically android) watches that last 3-4 days. I dont know what kind of sorcery that is but that means it consumes about 15mw??? I really do feel like im miscalculating something but i checked multiple times. Do they hibernate linux/android and run it off of another chip. I also dont know how to excecute that properly and its kind of off topic of my question. So point is linux on a ~60mw budget in s smartwatch. I want to use a mip display as i really like the look and it uses little power but if ever want a heart rate sensor in it thats even more power consumpotion. Thanks in advance i guess if a saint answers this shitstorm of a question.

Im building a flashlight and i want to test if a fan in it would be a good idea but the flashlight is really small so i would need a motor thats smaller than 1 cm preferably. I found really good ones at maxon group but unless you order them in bulk(1000+ units) they cost like 400€. So do yall know anywhere i could find them? Thanks in advance! (Edit: Im a complete baffoon and forgot to specify that preferably i would need a water resistant fan. I assumed this because bldc motors without drivers are wter resistant)

Is there an andúril light with actual rgb aux lights instead of the resistor ones or the single colour ones? If no, is it even possible with the microchip they use? I know its a pretty limited chip.

I have an emisar d2 and dt8 and both are ip 67 but so far any time i tried to use them in wet conditions water got into the body. The strange thing is they didnt actually break they just acted strange for a while and then after drying for a night everything seemed okay. Except my trust in emisar. They are both amazing lights but im always extremely carefull now when using them. Kinda dissapointed. Wanted to do a nld post about my dt8 but this how it ended up. Extra details: they both fogged up, the d2 didnt really turn off correctly. The dt8 worked perfectly for hours after submersion in water but when i changed the battery i noticed the head was audably and visibly bubbling water when i screwed on the cap.