Here are some common Chinese pinyin and Chinese characters found on vintage Chinese watches:

shoubiaochang-watch factory
fang zhen-shockproof
fangshui-waterproof
fangci-megnetic resisitant
quangang-all S/S
bangang- S/S back only
rili-date
zidong-automatic
zuan or zhan-jewels
zhongguozhizao-made in China

占-jewls found earlier watches
钻-jewels on later watches.
防水,防振,防磁-water proof,shock proof,anti megnetic.
中国制造-made in China