diff --git a/lib/appfigures.rb b/lib/appfigures.rb
index 3a69b5b..94e48e0 100644
--- a/lib/appfigures.rb
+++ b/lib/appfigures.rb
@@ -1,5 +1,6 @@
 require 'appfigures/version'
 require 'appfigures/connection'
+require 'utils/hash_extensions'
 
 require 'date'
 
@@ -17,6 +18,9 @@ def product_sales
         'store_name'      => hash['product']['store_name'],
         'name'            => hash['product']['name'],
         'sku'             => hash['product']['sku'],
+        'ref_no'          => hash['product']['ref_no'],
+        'added_timestamp' => Date.parse(hash['product']['added_timestamp']),
+        'icon'            => hash['product']['icon'],
         'downloads'       => hash['downloads'].to_i,
         'returns'         => hash['returns'].to_i,
         'updates'         => hash['updates'].to_i,
@@ -28,8 +32,11 @@ def product_sales
     end
   end
 
-  def date_sales(start_date, end_date)
-    url = "sales/dates+products/#{start_date.strftime('%Y-%m-%d')}/#{end_date.strftime('%Y-%m-%d')}"
+
+  # GET /sales/dates+products/2013-03-01/2013-03-31
+  # See http://docs.appfigures.com/api/reference/v1-1/sales
+  def date_sales(start_date, end_date, options = {})
+    url = "sales/dates+products/#{start_date.strftime('%Y-%m-%d')}/#{end_date.strftime('%Y-%m-%d')}#{options.to_query_string(true)}"
     self.connection.get(url).body.map do |date, product|
       product.map do |product_id, hash|
         Hashie::Mash.new({
@@ -39,6 +46,7 @@ def date_sales(start_date, end_date)
           'store_name'      => hash['product']['store_name'],
           'name'            => hash['product']['name'],
           'sku'             => hash['product']['sku'],
+          'ref_no'          => hash['product']['ref_no'],
           'downloads'       => hash['downloads'].to_i,
           'returns'         => hash['returns'].to_i,
           'updates'         => hash['updates'].to_i,
diff --git a/lib/utils/hash_extensions.rb b/lib/utils/hash_extensions.rb
new file mode 100644
index 0000000..6a4722a
--- /dev/null
+++ b/lib/utils/hash_extensions.rb
@@ -0,0 +1,13 @@
+  
+class Hash
+  def to_query_string(include_question_mark = true)
+    query_string = ''
+    unless empty?
+      query_string << '?' if include_question_mark
+      query_string << inject([]) do |params, (key, value)| 
+        params << "#{key}=#{value}" 
+      end.join('&')
+    end
+    query_string
+  end
+end
diff --git a/spec/date_sales_spec.rb b/spec/date_sales_spec.rb
index 2791ad0..69384a3 100644
--- a/spec/date_sales_spec.rb
+++ b/spec/date_sales_spec.rb
@@ -47,10 +47,23 @@
         }
       }
       EOF
+    body223123 = <<-EOF
+      {
+	"2012-09-01": {
+	  "223123": {
+	    "downloads": 30,
+	    "product": {
+	      "id": 223123
+	    }
+	  }
+	}
+      }
+      EOF
       @api = Appfigures.new username: 'test', password: 'test'
       @stubs = Faraday::Adapter::Test::Stubs.new do |stub|
+	stub.get('/v1.1/sales/dates+products/2012-09-01/2012-09-01?products=223123') { [status_code, headers, body223123] }
         stub.get('/v1.1/sales/dates+products/2012-09-01/2012-09-01') { [status_code, headers, body] }
-      end
+	end
       @api.connection.adapter :test, @stubs
   end
 
@@ -94,5 +107,8 @@
   it 'returns a revenue number' do
     expect(@api.date_sales(start_date, end_date).first.revenue).to eq(100.99)
   end
+  it 'returns a specific product ID' do
+    expect(@api.date_sales(start_date, end_date, { :products => 223123 }).first.product_id).to eq(223123)
+  end
 
 end
diff --git a/spec/product_sales_spec.rb b/spec/product_sales_spec.rb
index 1527bec..471c792 100644
--- a/spec/product_sales_spec.rb
+++ b/spec/product_sales_spec.rb
@@ -89,5 +89,14 @@
   it 'returns a revenue number' do
     expect(@api.product_sales.first.revenue).to eq(100.99)
   end
+  it 'returns a ref_no' do
+    expect(@api.product_sales.first.ref_no).to eq('536354432')
+  end
+  it 'returns an added timestamp' do
+    expect(@api.product_sales.first.added_timestamp).to eq(Date.parse('2012-07-23T00:00:00'))
+  end
+  it 'returns an icon' do
+    expect(@api.product_sales.first.icon).to eq('http://a5.mzstatic.com/us/r1000/091/Purple/v4/20/69/65/20696562-4e19-17fe-5ffe-cb77a78e1651/mzl.jtpselsb.png')
+  end
 
 end