Patent ID: 7347620

Claim:
A watch comprising: a barrel having a pipe installation hole and a threaded hole perpendicular to and in communication with the installation hole; a stem pipe having an outer surface provided with an engaging recessed portion, the stem pipe including an insertion portion inserted in said pipe installation hole so as to be withdrawable from outside of said barrel, the stem pipe further including a barrel outside protruding portion disposed outside said barrel and having an external thread; an annular waterproof packing sandwiched between said pipe installation hole and said insertion portion; a mounting screw threaded into said threaded hole so as to be movable back and forth, the mounting screw being inserted in said engaging recessed portion to hold said stem pipe to said barrel; and a crown having an inner cylindrical portion inserted inside said insertion portion, said crown including an internal thread removably threaded to said external thread, the crown further including an outer cylindrical portion bearing against a barrel outer surface of said barrel.