diff --git a/apps/clkinfostopw/clkinfo.js b/apps/clkinfostopw/clkinfo.js
index 0073543b4..e89c18505 100644
--- a/apps/clkinfostopw/clkinfo.js
+++ b/apps/clkinfostopw/clkinfo.js
@@ -3,6 +3,7 @@
     var durationOnPause = "---";
     var redrawInterval;
     var startTime;
+    var _a = (require("Storage").readJSON("clkinfostopw.setting.json", true) || {}).format, format = _a === void 0 ? 0 : _a;
     var unqueueRedraw = function () {
         if (redrawInterval)
             clearInterval(redrawInterval);
@@ -11,7 +12,7 @@
     var queueRedraw = function () {
         var _this = this;
         unqueueRedraw();
-        redrawInterval = setInterval(function () { return _this.emit('redraw'); }, 100);
+        redrawInterval = setInterval(function () { return _this.emit('redraw'); }, 1000);
     };
     var pad2 = function (s) { return ('0' + s.toFixed(0)).slice(-2); };
     var duration = function (start) {
@@ -21,10 +22,14 @@
         var mins = seconds / 60;
         seconds %= 60;
         if (mins < 60)
-            return "".concat(mins.toFixed(0)+":").concat(pad2(seconds));
+            return format === 0
+                ? "".concat(pad2(mins), "m").concat(pad2(seconds), "s")
+                : "".concat(mins.toFixed(0), ":").concat(pad2(seconds));
         var hours = mins / 60;
         mins %= 60;
-        return "".concat(hours.toFixed(0)+":").concat(pad2(mins)).concat(pad2(seconds));
+        return format === 0
+            ? "".concat(hours.toFixed(0), "h").concat(pad2(mins), "m").concat(pad2(seconds), "s")
+            : "".concat(hours.toFixed(0), ":").concat(pad2(mins), ":").concat(pad2(seconds));
     };
     var img = function () { return atob("GBiBAAAAAAB+AAB+AAAAAAB+AAH/sAOB8AcA4A4YcAwYMBgYGBgYGBg8GBg8GBgYGBgAGAwAMA4AcAcA4AOBwAH/gAB+AAAAAAAAAA=="); };
     return {
@@ -39,7 +44,14 @@
                         : durationOnPause,
                     img: img(),
                 }); },
-                show: queueRedraw,
+                show: function () {
+                    if (startTime) {
+                        queueRedraw.call(this);
+                    }
+                    else {
+                        this.emit('redraw');
+                    }
+                },
                 hide: unqueueRedraw,
                 run: function () {
                     if (startTime) {
diff --git a/apps/clkinfostopw/settings.js b/apps/clkinfostopw/settings.js
new file mode 100644
index 000000000..89b234f3b
--- /dev/null
+++ b/apps/clkinfostopw/settings.js
@@ -0,0 +1,23 @@
+"use strict";
+(function (back) {
+    var _a;
+    var SETTINGS_FILE = "clkinfostopw.setting.json";
+    var storage = require("Storage");
+    var settings = storage.readJSON(SETTINGS_FILE, true) || {};
+    (_a = settings.format) !== null && _a !== void 0 ? _a : (settings.format = 0);
+    var save = function () {
+        storage.writeJSON(SETTINGS_FILE, settings);
+    };
+    E.showMenu({
+        "": { "title": "stopwatch" },
+        "< Back": back,
+        "Format": {
+            value: settings.format,
+            format: function () { return settings.format == 0 ? "12h34m56s" : "12:34:56"; },
+            onchange: function () {
+                settings.format = (settings.format + 1) % 2;
+                save();
+            },
+        },
+    });
+});