The new n2Vin wine refrigeration can keep an open bottle of wine delicious for a month. It uses nitrogen gas, which displaces destructive oxygenated air in the headspace of opened bottles. The n2vin comes with five dispensing taps connected to five opened bottles and space for five other bottles. The n2Vin wine refrigeration and preservation unit is housed in a black cabinet with stainless steel interiors, and it’s available with both right- and left-handed door hinging. $2,500.