diff --git a/iot_train.h b/iot_train.h
index 4c078a4..b02c288 100644
--- a/iot_train.h
+++ b/iot_train.h
@@ -93,6 +93,14 @@ typedef union {
 #define XIAO_VOLT_CHAR_PROP (BLERead|BLENotify)                         // property:voltage characteristic, readable/notifiable
 #define XIAO_VOLT_CHAR_TYPE BLECharacteristic                           // type:voltage characteristic, byte array
 #define XIAO_VOLT_CHAR_LEN 8                                            // length:voltage characteristic, 8 bytes
+#define XIAO_VER_CHAR_UUID "AD0C2003-64E9-48B0-9088-6F9E9FE4972E"       // UUID:firmware version characteristic 
+#define XIAO_VER_CHAR_PROP (BLERead|BLENotify)                          // property:firmware version characteristic, readable/notifiable
+#define XIAO_VER_CHAR_TYPE BLECharacteristic                            // type:firmware version characteristic, byte array
+#define XIAO_VER_CHAR_LEN 4                                             // length:firmware version characteristic, 4 bytes
+#define XIAO_MABEEENAME_CHAR_UUID "AD0C2004-64E9-48B0-9088-6F9E9FE4972E"// UUID:device name characteristic 
+#define XIAO_MABEEENAME_CHAR_PROP (BLERead|BLENotify)                   // property:MaBeee device name characteristic, readable/notifiable
+#define XIAO_MABEEENAME_CHAR_TYPE BLECharacteristic                     // type:MaBeee device name characteristic, byte array
+#define XIAO_MABEEENAME_CHAR_LEN 12                                     // length:MaBeee device name characteristic, 12 bytes
 
 // BLE peripheral GATT profile: MaBeee side
 #define MABEEE_CTRL_SERV_UUID "B9F5FF00-D813-46C6-8B61-B453EE2C74D9"    // UUID:MaBeee control service
@@ -244,6 +252,16 @@ void updatePwm();
  */
 void updateVolt();
 
+/**
+ * @brief update firmware version value
+ */
+void updateVer();
+
+/**
+ * @brief update MaBeee device name value
+ */
+void updateMaBeeeName();
+
 /**
  * @brief Set the Accel Period
  * 
diff --git a/iot_train.ino b/iot_train.ino
index af1e668..4933990 100644
--- a/iot_train.ino
+++ b/iot_train.ino
@@ -11,7 +11,7 @@
  */
 
 #define VERSION_MAJOR 0
-#define VERSION_MINOR 2
+#define VERSION_MINOR 3
 
 #include <math.h>
 #include "iot_train.h"   // IoT Train definitions
@@ -46,6 +46,9 @@ BLECharacteristic tempCharacteristic(XIAO_TEMP_CHAR_UUID, XIAO_TEMP_CHAR_PROP, X
 BLECharacteristic ledCharacteristic(XIAO_LED_CHAR_UUID, XIAO_LED_CHAR_PROP, XIAO_LED_CHAR_LEN);                 // GATT: LED characteristic
 BLECharacteristic pwmCharacteristic(XIAO_PWM_CHAR_UUID, XIAO_PWM_CHAR_PROP, XIAO_PWM_CHAR_LEN);                 // GATT: PWM characteristic
 BLECharacteristic voltCharacteristic(XIAO_VOLT_CHAR_UUID, XIAO_VOLT_CHAR_PROP, XIAO_VOLT_CHAR_LEN);             // GATT: voltage characteristic
+BLECharacteristic verCharacteristic(XIAO_VER_CHAR_UUID, XIAO_VER_CHAR_PROP, XIAO_VER_CHAR_LEN);                 // GATT: firmware version characteristic
+BLECharacteristic maNameCharacteristic(XIAO_MABEEENAME_CHAR_UUID, XIAO_MABEEENAME_CHAR_PROP, XIAO_MABEEENAME_CHAR_LEN); // GATT: device name characteristic
+
 
 // handler for writable characteristics
 void onCommandWritten(BLEDevice, BLECharacteristic);
@@ -57,6 +60,8 @@ void updateAccel();
 void updateGyro();
 void updateTemp();
 void updateVolt();
+void updateVer();
+void updateMaBeeeName();
 
 // MaBeee BLE device properties and GATT profile:
 BLEDevice mabeee;   // MaBeee BLE device
@@ -135,6 +140,8 @@ void setup() {
     xiaoService.addCharacteristic(ledCharacteristic);
     xiaoService.addCharacteristic(pwmCharacteristic);
     xiaoService.addCharacteristic(voltCharacteristic);
+    xiaoService.addCharacteristic(verCharacteristic);
+    xiaoService.addCharacteristic(maNameCharacteristic);
     BLE.addService(xiaoService);
 
     // update values
@@ -146,6 +153,7 @@ void setup() {
     mabeeeVolt.timestamp = 0;
     mabeeeVolt.float1 = 0.0F;
     updateVolt();
+    updateVer();
 
     // device ready
     led.resetB();
@@ -261,6 +269,7 @@ void doCentral() {
             Serial.println("Central: Connected.");
             stateCentral = C_CONNECTED;
             entry = true;
+            updateMaBeeeName();
         } else {
             counter--;
             if (!counter) {
@@ -339,6 +348,7 @@ void doCentral() {
             Serial.println("Central: Disconnected.");
             stateCentral = C_SCANNING;
             entry = true;
+            updateMaBeeeName();
         }
       } break;
     }
@@ -467,6 +477,18 @@ void updateVolt() {
     voltCharacteristic.writeValue(mabeeeVolt.byteArray, sizeof(mabeeeVolt.byteArray));
 }
 
+void updateVer() {
+    versionPacket ver;
+    ver.major = VERSION_MAJOR;
+    ver.minor = VERSION_MINOR;
+    verCharacteristic.writeValue(ver.byteArray, sizeof(ver.byteArray));
+}
+
+void updateMaBeeeName() {
+    String MaBeee = mabeee.localName();
+    maNameCharacteristic.writeValue(MaBeee.c_str(), MaBeee.length());
+}
+
 void setAccelPeriod(uint16_t period) {
     accelPeriod = period;
 }