Syncs with both iPhone and Android phones. Runs new Pebble timeline operating system. Now with an extended battery life better by far than any other smartwatch (up to 7 days), color display, microphone and a new timeline interface that highlights what"s important in your day. Dimensions: Case: 40.5mm L × 37.5mm W × 9.5mm T (including lugs, length: 47mm). Band: 22mm wide. Weight: 42.5g (including standard band).