Bright 1.4" solar charged display. Tested to US military standards for thermal shock and water resistance. Built-in LED flashlight speaker and microphone. MultiSport Auto Transition - detects sport changes between swim bike and run in multisport activities. Features for performance health maps activities/functions and staying connected. Battery life up to 30 days. Black and pebble gray silicone strap. Carbon gray DLC titanium bezel. Case size: 51 x 51 x 14.7mm. Band fits wrists 127-210mm in circumference. Includes charging/data cable.