RGB indicator Each color change represents a different encoding format. In Bluetooth pairing mode: SBC: Blue long bright AAC: Cyan long bright LDAC: White long bright aptX/aptX LL/aptX HD: purple long bright Life time: USB IN8H; AUX IN22H; Bluetooth 15H Charging time: 3 hours Asynchronous USB DAC It can be used as an external USB DAC, and the USB receiving chip uses XMOS's new XU208, Working in asynchronous transmission mode, PCM supports up to 32bit/384kHz, DXD 32bit/352.8kHz; DSD supports DOP, NATIVE mode, DSD supports up to DSD256 Specifications: Battery: Built-in 3.7V/1800mAh rechargeable lithium ion polymer battery Applicable system: Win7, Win8, Win10, Mac OSX, I0S, Android system Output power: 300mW (320 load) Frequency response: USB/Bluetooth: 20Hz-20kHz (0.5dB) AUX: 10 Hz-100kHz (0.5dB) USB support sampling rate: PCM: 16-32bit/44.1-384kHz DXD: 24-32 bit/352.8-384kHz DSD: DOP/NATIVE mode, DSD64-256 Bluetooth support sampling rate: 16-32bit/44.1 -96kHz Bluetooth support formats: SBC, AAC, aptX, aptX LL, aptX HD, LDAC, LHDC Gain: +3/9dB Signal to noise ratio: 115dB Separation: 75dB Charging time: 3 hours Harmonic distortion USB: 0.001%@1kHz Bluetooth: 0.002%@1kHz AUX IN: 0.0009%@1kHz Size: 105*55*15.6mm Weight: 142g