diff --git a/README.md b/README.md
index 234211a..83ed8f1 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ This Notebook Adapter emulator is tested to be compatible with:
 
 - [Timex Data Link® Software 2.1d](https://assets.timex.com/html/data_link_software.html)
 - [Timex Ironman Triathlon® Data Link® 2.01](https://assets.timex.com/html/data_link_software.html)
+- [Timex BeepwearPRO 1.03](https://assets.timex.com/beepwear)
 - [DSI Electronics e-BRAIN v1.1.6](https://archive.org/details/ebrain-1.1.6)
 - [timex\_datalink\_client Ruby library](https://github.com/synthead/timex_datalink_client)
 
diff --git a/led_blaster.cpp b/led_blaster.cpp
index c43b3c8..75d9bc6 100644
--- a/led_blaster.cpp
+++ b/led_blaster.cpp
@@ -1,25 +1,42 @@
 #define LED_PIN 13
 
-#define LED_ON_MS 15
-#define LED_OFF_MS 450
+#define LED_ON_MS_NORMAL 15
+#define LED_OFF_MS_NORMAL 450
+
+#define LED_ON_MS_FAST 6
+#define LED_OFF_MS_FAST 408
 
 #include <Arduino.h>
 
 namespace LedBlaster {
+  uint16_t led_on_ms;
+  uint16_t led_off_ms;
+
+  void enable_fast_mode(bool fast_mode_enabled) {
+    if (fast_mode_enabled) {
+      led_on_ms = LED_ON_MS_FAST;
+      led_off_ms = LED_OFF_MS_FAST;
+    } else {
+      led_on_ms = LED_ON_MS_NORMAL;
+      led_off_ms = LED_OFF_MS_NORMAL;
+    }
+  }
+
   void setup() {
     pinMode(LED_PIN, OUTPUT);
+    enable_fast_mode(false);
   }
 
   void emit_0() {
     digitalWrite(LED_PIN, HIGH);
-    delayMicroseconds(LED_ON_MS);
+    delayMicroseconds(led_on_ms);
 
     digitalWrite(LED_PIN, LOW);
-    delayMicroseconds(LED_OFF_MS);
+    delayMicroseconds(led_off_ms);
   }
 
   void emit_1() {
-    delayMicroseconds(LED_ON_MS + LED_OFF_MS);
+    delayMicroseconds(led_on_ms + led_off_ms);
   }
 
   void emit_byte(uint8_t serial_byte) {
diff --git a/led_blaster.h b/led_blaster.h
index e1af3fb..3a003e8 100644
--- a/led_blaster.h
+++ b/led_blaster.h
@@ -5,6 +5,7 @@
 
 namespace LedBlaster {
   void setup();
+  void enable_fast_mode(bool fast_mode_enabled);
   void emit_0();
   void emit_1();
   void emit_byte(uint8_t serial_byte);
diff --git a/notebook_adapter.cpp b/notebook_adapter.cpp
index e7d92ff..47696ac 100644
--- a/notebook_adapter.cpp
+++ b/notebook_adapter.cpp
@@ -1,50 +1,45 @@
-#define COMMAND_PING 'x'
 #define COMMAND_QUERY '?'
+#define COMMAND_FAST 'V'
 #define COMMAND_TRANSMIT 'U'
-#define COMMAND_QUERY_PAYLOAD "?126\r M764 rev 764002"
+#define COMMAND_QUERY_PAYLOAD "107\r M764 rev 764100"
 
 #define DATA_MODE_TIMEOUT_MS 1000
 
 #include <Arduino.h>
+#include "led_blaster.h"
 
 namespace NotebookAdapter {
   unsigned long last_data_ms = 0;
   bool command_mode = true;
 
-  void emulate_command_mode(uint8_t serial_byte) {
-    switch(serial_byte) {
-      case COMMAND_PING:
-        Serial.write(COMMAND_PING);
-
-        break;
-
-      case COMMAND_QUERY:
-        Serial.print(COMMAND_QUERY_PAYLOAD);
-        Serial.write(0);
-
-        break;
-
-      case COMMAND_TRANSMIT:
-        Serial.write(COMMAND_TRANSMIT);
-        command_mode = false;
-
-        break;
-    }
-  }
-
-  void emulate_data_mode(uint8_t serial_byte) {
+  void emulate(uint8_t serial_byte) {
     if (millis() - last_data_ms > DATA_MODE_TIMEOUT_MS) {
+      LedBlaster::enable_fast_mode(false);
       command_mode = true;
     }
 
     Serial.write(serial_byte);
 
+    switch(serial_byte) {
+      case COMMAND_QUERY:
+        if (command_mode) {
+          Serial.print(COMMAND_QUERY_PAYLOAD);
+          Serial.write(0);
+        }
+
+        break;
+      case COMMAND_FAST:
+        if (command_mode) {
+          LedBlaster::enable_fast_mode(true);
+        }
+
+        break;
+      case COMMAND_TRANSMIT:
+        command_mode = false;
+
+        break;
+    }
+
     last_data_ms = millis();
   }
-
-  void emulate(uint8_t serial_byte) {
-    void(*function)(uint8_t) = command_mode ? emulate_command_mode : emulate_data_mode;
-
-    function(serial_byte);
-  }
 }
diff --git a/notebook_adapter.h b/notebook_adapter.h
index b33f448..0adec12 100644
--- a/notebook_adapter.h
+++ b/notebook_adapter.h
@@ -4,8 +4,6 @@
 #include <Arduino.h>
 
 namespace NotebookAdapter {
-  void emulate_command_mode(uint8_t serial_byte);
-  void emulate_data_mode(uint8_t serial_byte);
   void emulate(uint8_t serial_byte);
 }