Someone who did it before me (though not with android os)
http://unorthodox-engineers.blogspot.com/
https://314reactor.com/2017/03/01/windows-98-wrist-watch/
https://www.theverge.com/circuitbreaker/2017/7/27/16035508/diy-wearable-computer-google-glass-raspberry-pi-instructions
Parts lists
4inch touch screen (look at screen size at wiki) (if I am making a watch instead of smart glasses)
raspberry pi (with wifi and bluetooth) (probably raspberry pi 3 B+, but I'm not sure because of the size I could use zero w, which has wifi and bluetooth, but the ram is 500MB, which may be too small...)
sd card (I'll use my samsung evo 32GB class 10 micro sd)
watch strap (if I am making a watch instead of smart glasses)
vufine wearable display (for smart galsses) amazon vulfine website store
Other (maybe) helpful links
https://www.adafruit.com/category/63
