diff --git a/selfdrive/ui/.gitignore b/selfdrive/ui/.gitignore
index 10c30bb7d9..5d656f889e 100644
--- a/selfdrive/ui/.gitignore
+++ b/selfdrive/ui/.gitignore
@@ -1,8 +1,8 @@
 moc_*
 *.moc
 
+watch3
 installer/installers/*
-
 replay/replay
 replay/tests/test_replay
 qt/text
diff --git a/selfdrive/ui/SConscript b/selfdrive/ui/SConscript
index 7816beb033..eb919f761c 100644
--- a/selfdrive/ui/SConscript
+++ b/selfdrive/ui/SConscript
@@ -114,5 +114,7 @@ if arch in ['x86_64', 'Darwin'] and os.path.exists(Dir("#tools/").get_abspath())
   replay_libs = [replay_lib, 'avutil', 'avcodec', 'avformat', 'swscale', 'bz2', 'curl'] + qt_libs
   qt_env.Program("replay/replay", ["replay/main.cc"], LIBS=replay_libs)
 
+  qt_env.Program("watch3", ["watch3.cc"], LIBS=qt_libs)
+
   if GetOption('test'):
     qt_env.Program('replay/tests/test_replay', ['replay/tests/test_runner.cc', 'replay/tests/test_replay.cc'], LIBS=[replay_libs])
diff --git a/selfdrive/ui/watch3.cc b/selfdrive/ui/watch3.cc
new file mode 100644
index 0000000000..4c2b3d1a18
--- /dev/null
+++ b/selfdrive/ui/watch3.cc
@@ -0,0 +1,28 @@
+#include <QApplication>
+#include <QtWidgets>
+
+#include "selfdrive/ui/qt/qt_window.h"
+#include "selfdrive/ui/qt/util.h"
+#include "selfdrive/ui/qt/widgets/cameraview.h"
+
+int main(int argc, char *argv[]) {
+  QSurfaceFormat fmt;
+  fmt.setRenderableType(QSurfaceFormat::OpenGLES);
+  QSurfaceFormat::setDefaultFormat(fmt);
+
+  QApplication a(argc, argv);
+  QWidget w;
+  setMainWindow(&w);
+
+  QVBoxLayout *layout = new QVBoxLayout(&w);
+  layout->setMargin(0);
+  layout->setSpacing(0);
+  layout->addWidget(new CameraViewWidget(VISION_STREAM_RGB_BACK, false));
+
+  QHBoxLayout *hlayout = new QHBoxLayout(&w);
+  layout->addLayout(hlayout);
+  hlayout->addWidget(new CameraViewWidget(VISION_STREAM_RGB_FRONT, false));
+  hlayout->addWidget(new CameraViewWidget(VISION_STREAM_RGB_WIDE, false));
+
+  return a.exec();
+}