Tumi gives you an innovative smart key fob that connects with your Bluetooth devices like your phone and will signal you when you are 30 meters away and connect to your calls. It alerts when you left your keys or phones. It comes with a charger and even a one-touch emergency button. Size of the product - 0.5" X 1.75" X 1.75 " and weight 5.6 ounces and color - Gun metal