Android APP for Bluetooth headset modification with a No DC isolation power supply Key benefits Easy control from your Android device: manage headset settings directly through the Android app. Compatible with lithium battery powered setups: No DC isolation power supply required, suitable for lithium battery power sources used in headset modification projects. Sound : adjust the EQ to tailor audio performance to your preference. Secure and recognizable: change the headset name and pairing password for easier identification and improved security. What this product does Provides an Android based interface to modify Bluetooth headset parameters. Supports changes to equalization (EQ) settings. Enables changing the device name and the pairing password. Key attributes Function: change EQ; change name/password. Compatibility: Android APP. Power supply note: No DC isolation power supply; suitable for lithium battery power supply; used for Bluetooth headset modification. Performance: appdriven configuration to streamline headset . 23 use scenarios Scenario 1: A hobbyist tweaks the sound of a Bluetooth headset by adjusting EQ via the Android app while powered by a lithium battery pack. Scenario 2: An electronics hobbyist manages a small set of headsets for a home office, using the app to rename each device and set unique pairing passwords for secure, hassle pairing. Scenario 3: A traveler personalizes a headset for easy recognition by changing its name and optimizing EQ settings through the Android app.