["brand new and high quality\r\n\r\nFeatures:\r\nI2S output (BCK, LRCK, DATA), SPDIF output (DATA)\r\nFunction keys: KEYCOM, for PLAY, VOL+, VOL-, PREV, NEXT, high level 3.3V is valid.\r\nThe button functions are described as follows:\r\nPLAY: for play/pause (short press); re-pair (long press 2.5S); clear pairing list (long press 5S)\r\nVOL+: volume plus (short press, long press continuous volume plus)\r\nVOL-: Volume reduction (short press, long press continuous volume reduction)\r\nPREV: Previous song (short press)\r\nNEXT: next song (short press)\r\nKEYCOM: Button Common\r\nLED light: pairing status, double lights alternately flash; pairing is successful, single light flash.\r\nfor Always in pairing when there is no connection, no standby.\r\nControl external amplifier mute foot MUTE (with sound: output high 3.3V, no sound: output low level).\r\nSupport AAC, APTX-HD decoding.\r\n\r\nSpecification:\r\nOutput type: I2S output, SPDIF output\r\nInput voltage: 3.6-5V\r\nDimensions: 3x3cm/1.18x1.18inch\r\nColor: As shown\r\nQuantity: 1 Pc\r\nNote: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\n 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\n1 x CSR8675 Amplifier Module With Baseboard"]