diff --git a/apps/product/admin.py b/apps/product/admin.py
index b77f2cbc..17003011 100644
--- a/apps/product/admin.py
+++ b/apps/product/admin.py
@@ -1,7 +1,7 @@
 """Product admin conf."""
 from django.contrib import admin
 from utils.admin import BaseModelAdminMixin
-from .models import Product, ProductType, ProductSubType
+from .models import Product, ProductType, ProductSubType, Unit, Characteristic
 
 
 @admin.register(Product)
@@ -17,3 +17,13 @@ class ProductTypeAdmin(admin.ModelAdmin):
 @admin.register(ProductSubType)
 class ProductSubTypeAdmin(admin.ModelAdmin):
     """Admin page for model ProductSubType."""
+
+
+@admin.register(Unit)
+class UnitAdmin(admin.ModelAdmin):
+    """Admin page for model Unit."""
+
+
+@admin.register(Characteristic)
+class CharacteristicAdmin(admin.ModelAdmin):
+    """Admin page for model Characteristic."""
diff --git a/apps/product/models.py b/apps/product/models.py
index 48ccfd7c..224343a3 100644
--- a/apps/product/models.py
+++ b/apps/product/models.py
@@ -138,7 +138,8 @@ class Product(TranslatedFieldsMixin, BaseAttributes):
                             verbose_name=_('name'))
     description = TJSONField(_('Description'), null=True, blank=True,
                              default=None, help_text='{"en-GB":"some text"}')
-    characteristics = JSONField(_('Characteristics'))
+    characteristics = models.ManyToManyField('Characteristic',
+                                             verbose_name=_('characteristics'))
     country = models.ManyToManyField('location.Country',
                                      verbose_name=_('Country'))
     available = models.BooleanField(_('Available'), default=True)
@@ -163,8 +164,6 @@ class Product(TranslatedFieldsMixin, BaseAttributes):
     wine_village = models.ForeignKey('location.WineVillage', on_delete=models.PROTECT,
                                      blank=True, null=True,
                                      verbose_name=_('wine appellation'))
-    bottles_produced = models.IntegerField(blank=True, null=True,
-                                           verbose_name=_('bottles produced'))
     slug = models.SlugField(unique=True, max_length=255, null=True,
                             verbose_name=_('Establishment slug'))
     favorites = generic.GenericRelation(to='favorites.Favorites')
@@ -213,6 +212,23 @@ class OnlineProduct(Product):
         verbose_name_plural = _('Online products')
 
 
+class Unit(models.Model):
+    """Product unit model."""
+    name = models.CharField(max_length=255,
+                            verbose_name=_('name'))
+    value = models.CharField(max_length=255,
+                             verbose_name=_('value'))
+
+    class Meta:
+        """Meta class."""
+        verbose_name = _('unit')
+        verbose_name_plural = _('units')
+
+    def __str__(self):
+        """Overridden dunder method."""
+        return self.name
+
+
 class Characteristic(TranslatedFieldsMixin, models.Model):
     """Characteristic model."""
 
@@ -222,8 +238,7 @@ class Characteristic(TranslatedFieldsMixin, models.Model):
                       help_text='{"en-GB":"some text"}')
     value = models.CharField(max_length=255,
                              verbose_name=_('value'))
-    unit = models.ForeignKey('Unit', on_delete=models.PROTECT,
-                             )
+    unit = models.ForeignKey('Unit', on_delete=models.PROTECT)
     priority = models.IntegerField(unique=True, null=True, default=None)
 
     class Meta:
diff --git a/apps/transfer/models.py b/apps/transfer/models.py
index f644fc19..8f185dff 100644
--- a/apps/transfer/models.py
+++ b/apps/transfer/models.py
@@ -900,8 +900,8 @@ class KeyValueMetadatumKeyValueMetadatumEstablishments(MigrateMixin):
 class WineColor(MigrateMixin):
     using = 'legacy'
 
-    id = models.IntegerField()
     name = models.CharField(max_length=255)
+    order_number = models.IntegerField(null=True, blank=True)
     fra_encima_id = models.IntegerField(null=True, blank=True)
 
     class Meta:
@@ -912,7 +912,6 @@ class WineColor(MigrateMixin):
 class WineClassification(MigrateMixin):
     using = 'legacy'
 
-    id = models.IntegerField()
     name = models.CharField(max_length=255)
     desc = models.TextField()
     latitude = models.FloatField(blank=True, null=True)