diff --git a/firmware/SensorLogger.cpp b/firmware/SensorLogger.cpp
index 58bf167..c6958b3 100644
--- a/firmware/SensorLogger.cpp
+++ b/firmware/SensorLogger.cpp
@@ -85,6 +85,9 @@ void SensorLogger::begin(uint8_t soilPin) {
   BLEAdvertising* advertising = BLEDevice::getAdvertising();
   advertising->addServiceUUID(kNusServiceUuid);
   advertising->setScanResponse(true);
+  BLEAdvertisementData scanResponseData;
+  scanResponseData.setName(bluetoothName_.c_str());
+  advertising->setScanResponseData(scanResponseData);
   advertising->setMinPreferred(0x06);
   advertising->setMinPreferred(0x12);
   BLEDevice::startAdvertising();
diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index d974a8e..164f065 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -4,7 +4,7 @@
 #include "NeoPixelController.h"
 #include "SensorLogger.h"
 
-const char kA2dpDeviceName[] = "BT_Speaker5.4";
+const char kA2dpDeviceName[] = "BT_Speaker5.5";
 
 // I2C接続のOLED設定 (SSD1306 128x64)
 U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);