Samsung Level U Pro Stereo Bluetooth In-Ear Headphones with Microphone and UHQ Audio, Blue Type: Bluetooth Stereo Headset App-Enabled: Samsung Level app Noise Reduction: Yes Ear Coupling: Behind the Neck Talk Time: Up to 9 hour(s) Music Time: Up to 9 hour(s) Standby Time: Up to 300 hour(s) Bluetooth Version: 4.1