Model: bt5.0 audioBluetooth audio: supportAudio external interfacel: SupportUSB powered: supportSound card function: supportImmersion gold craft: SupportBattery powered: SupportCharge while putting: NO supportKey control: NO supportVoice calls: NO supportMute control(MUTE): NO supportBluetooth version: Bluetooth V5.0Decoding : HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2AVDTPV1.2POWER IN: 3.7V-5V DCSignal to noise :90DB harmonic distortion: -70dBCrosstalk: -86DBSupport configuration file :HFP/A2DP/AVRCP/AVCTPV/AVDTPV/Transmission distance :15MDecoding :WAV++FLAC+MP3Note: Without lithium batterySize: 44.9x33.75x12.2mmColour:blackMaterial:ABSPackage Contents:1 x BT5.0 Audio Board1 x case1 x 3.5mm AUX audio cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.