diff --git a/equipment/admin.py b/equipment/admin.py
index 55fd412..4de9ca8 100644
--- a/equipment/admin.py
+++ b/equipment/admin.py
@@ -63,8 +63,8 @@ class EquipmentAttributeValueInline(admin.TabularInline):
 
 
 class CategoryAdmin(admin.ModelAdmin):
-    readonly_fields = ['full_name']
-    list_display = ['name', 'parent', "full_name"]
+    readonly_fields = ['full_name_p']
+    list_display = ['name', 'parent', "full_name_p"]
     ordering = ['name', 'parent']
     search_fields = ['name',]
 
@@ -76,8 +76,39 @@ class EquipmentAttributeAdmin(admin.ModelAdmin):
 
 
 class EquipmentAdmin(admin.ModelAdmin):
-    readonly_fields = ['full_category', 'added_at', 'modified_at',]
+    readonly_fields = ['full_category_p',
+                        'added_at',
+                        'modified_at',
+                        'stock_aviable_p',
+                        'ids_aviable_p',
+                        'stock_lost_p',
+                        'ids_lost_p',
+            ]
     list_display = ['name', 'stock', 'owner', 'category', 'modified_at']
+    fieldsets = (
+        ('Général', {
+            'fields': ('name', 'owner', 'stock',  )
+        }),
+        ('Info stock',
+            {
+                'fields': (
+                    'stock_aviable_p',
+                    'ids_aviable_p',
+                    'stock_lost_p',
+                    'ids_lost_p',
+                    ),
+        }),
+        ('Catégorie', {
+            'fields': ('category', 'full_category_p'),
+        }),
+        ('Description', {
+            'fields': ('description', 'added_at', 'modified_at',),
+            }),
+    )
+
+
+
+
     ordering = ['name', 'owner', 'category']
     inlines = [EquipmentAttributeValueInline,
                EquipmentDefaultExtraInline,
diff --git a/equipment/models.py b/equipment/models.py
index 58145f7..a7625be 100644
--- a/equipment/models.py
+++ b/equipment/models.py
@@ -23,7 +23,7 @@ class EquipmentCategory(models.Model):
                 help_text=_("merci de ne pas faire de référence cyclique"),
                 )
 
-    def full_name_property(self):
+    def full_name(self):
         if self.parent is None:
             return "-"
         current = self
@@ -37,8 +37,8 @@ class EquipmentCategory(models.Model):
             current = current.parent
         return res
 
-    full_name_property.short_description = _("Chemin complet")
-    full_name = property(full_name_property)
+    full_name.short_description = _("Chemin complet")
+    full_name_p = property(full_name)
 
 
     class Meta:
@@ -97,11 +97,45 @@ class Equipment(EventSpecificMixin, models.Model):
                 auto_now=True,
                 )
 
-    def full_category_property(self):
-        return self.category.full_name_property()
+    def ids_aviable(self):
+        res = map(lambda x: x+1, range(self.stock))
+        for lost in self.losts.all():
+            res = [ x
+                    for x in res
+                    if x not in lost.ids ]
+        # TODO cassé
+        # TODO utilisés
+        return res
 
-    full_category_property.short_description = _("Chemin complet")
-    full_category= property(full_category_property)
+    def ids_lost(self):
+        res = []
+        for lost in self.losts.all():
+            res = res + [ x
+                           for x in lost.ids
+                           if x not in res]
+        return res
+
+    def stock_aviable(self):
+        return len(self.ids_available())
+
+    def stock_lost(self):
+        return len(self.ids_lost())
+
+    def full_category(self):
+        return self.category.full_name()
+
+    full_category.short_description = _("Chemin complet")
+    ids_aviable.short_description = _("disponibles")
+    ids_lost.short_description = _("perdus")
+    stock_aviable.short_description= _("quantité disponible")
+    stock_lost.short_description = _("quantité perdue")
+
+    full_category_p= property(full_category)
+    ids_aviable_p= property(ids_aviable)
+    ids_lost_p= property(ids_lost)
+    stock_aviable_p= property(stock_aviable)
+    stock_lost_p = property(stock_lost)
+    
 
 
     class Meta: