A replica of a nineteenth-century sea captain's chronometer that Chakotay gives Kathryn Janeway for her birthday during the Year of Hell, and which she at first orders him to recycle.
The pocket watch appears in the two-part Voyager story Year of Hell. Chakotay replicated it months before Voyager entered Krenim space and saved it for Janeway's birthday. It copies a chronometer carried by a captain of the old British navy whose ship was given up for lost in a Pacific typhoon and limped home many months later.
By the time he hands it over the ship is in ruins and every scrap of energy counts. Janeway thanks him and tells him to recycle it, saying the watch could be a meal, a hypospray or a pair of boots. Chakotay is hurt, and keeps it.
In the second part, with Chakotay a prisoner on Annorax's weapon ship and the crew sent away in escape pods, Janeway finds the watch and fastens it to her uniform. She is wearing it when she rams Voyager into the weapon ship and erases the whole year.