Material: Plastic Color: black Size: 43mm*43mm Function: To help keep the wine and keep the wine can't be stolen Easy to save wine and Environmental protection High Quality Black Plastic Wine Stopper Digital Locks Safe Gift Locks. This a code lock which can lock the mouth of the red wine ,makes the wine sealed,keep the red wine in . It can prevent red wine being stolen drunk or switched. Red wine with this code lock will be safe.It's suitable to be used in pub,wine shop,hotel,super market etc.It's also suitable for promotional gifts. PS: password setting : : Press and hold the silver round button on top; 2nd step:Adjust the number on top( initial password:000) to a new password you to set; 3rd step: Release the button,password setting will be finished. Package Included: 1 x Wine Stopper Lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.