Samsung galaxy watch 4 vs 5 40mm July 8, 2019 16 32 64 128 Samsung galaxy watch 4 vs samsung galaxy watch 5 40mm graphite specs Samsung galaxy watch 4 vs samsung galaxy watch 5 40mm specs Samsung galaxy 4 watch vs 5 Samsung watch 4 46mm vs 42mm Samsung watch 5 40 or 44 Samsung watch 4 44 vs 46 Samsung watch 5 44mm vs watch 4 44mm