Apple Watch
https://www.thegioididong.com/dong-ho-thong-minh/apple-watch-s2-42mm-black-stainless-steel-mnq12
Fitnit (tốt hơn)
http://www.lazada.vn/dong-ho-thong-minh-fitbit-blaze-size-s-den-2138284.html
http://www.lazada.vn/vong-deo-suc-khoe-fitbit-charge-2-black-5703081.html
