Samsung Galaxy Buds Core Black In-ear, Bluetooth v5.4, Hall Sensor, Proximity Sensor, Touch Sensor, Number of MIC 6, Speaker 1-way, Ambient Sound, Active Noise Cancellation, IP54, Total Music Play Time (Hours, ANC On) Up to 20, Total Music Play Time (Hours, ANC Off) Up to 35, Earbud Battery Capacity (mAh, Typical) 65.0, Case Battery Capacity (mAh, Typical) 500