• Smartwatch ya KW21 Ultra 2 inaoana na app ya FereFit. • Ina kazi za kupiga simu, kupokea notification, rekodi za simu, encoder, muziki, calculator, kufuatilia mazoezi, kudhibiti camera, taarifa za location, games, kazi za afya ya wanawake, kutafuta kifaa, kupima temperature ya mwili, presha ya damu, oxygen kwenye damu, stopwatch, kuweka muda/tarehe, na kubadilisha lugha. • Inajumuisha Airpods na mikanda 7 ya saa. • Inaweza kupiga simu, kupokea arifa, na kufuatilia shughuli za mazoezi. • Ina uwezo wa kufuatilia afya kama vile joto la mwili, shinikizo la damu, na oksijeni ya damu. • Inajumuisha kazi za msingi za smartwatch kama vile calculator, stopwatch, na games.