Feedback Clicker for correct compression depth LED Lights on the nappy to provide feedback on correct speed Warning light which will show if over 120 compressions per minute have been reached The Prestan Manikin range is world known for fantstic feedback through LED lights giving indication of depth and speed of compression. The newest update of the manikin includes a red light to indicate when users have more than 120 compressions per minutes (in line with american heart association guidelines). The manikin is also fitted with a clicker to provide feedback in the form of a click when the correct compression depth is achieved. Given the low energy useage of the LED lights the battery lasts with average useage for a number of months. The prestan single manikin comes with a start pack of lung bags and specifically crafted face shields.