Guess What Fruit is This?

My parents harvested Asian pears, plums, nectarine. They have only this plant left. The fruits are still hanging and ripping. If they are big as apple then the skin won't be much a problem but they are small. We eat these fruits while we take care of the garden. They are pretty like water droplet.
If you have not be able to guess what it is, then I guess you never hear of jujube.
Ziziphus zizyphus (from Greek ζίζυφον, zizyfon^[1]), commonly called jujube, red date, or chinese date, is a species of Ziziphus in the buckthorn family Rhamnaceae, used primarily for its fruits. Common names in Arabic are nabq, dum, tsal, sadr, zufzuuf (in Morocco) and sidr, the last of which also means Ziziphus lotus.^[2] In Persian it is called anab or annab , a name also used in Lebanon.
It is a small deciduous tree or shrub reaching a height of 5–10 m, usually with thorny branches. The leaves are shiny-green, ovate-acute, 2–7-cm wide and 1–3-cm broad, with three conspicuous veins at the base, and a finely toothed margin. The flowers are small, 5-mm wide, with five inconspicuous yellowish-green petals. The fruit is an edible oval drupe 1.5–3-cm deep; when immature it is smooth-green, with the consistency and taste of an apple, maturing brown to purplish-black and eventually wrinkled, looking like a small date. There is a single hard stone similar to an olive stone.^[