Features:Sleep mode for saving power.3.5mm stereo audio output.Compatible with home stereos/speaker，car stereos，headphones.Bluetooth V3.0+EDR music receiver， transmission range up to 10m/33ft.Support iPhone， Android phone， other smart phones which with Bluetooth A2DP function.Support hands free， can connect microphone and support phone calling through Bluetooth receiver.Specification:Condition: Brand NewType: Bluetooth Music ReceiverMaterial: PlasticBluetooth Version: V3.0 + EDR， Class 2Color: BlackTransmission Range: Up to 10m/33ftFrequency: 2.4GHzI/O: 3.5mm port， Micro USB charging portOperation Time: Up to 8hSize 53mm*25mm*11mmProfile A2DPCertification: CE， FCC， BQBPackage Included:1×Bluetooth Audio Receiver1×USB Cable1×3.5mm Connector1×User ManualNote:Due to the light and screen difference， the item's color may be slightly different from the pictures.Please understand.Make sure you don't mind before you bid. Please allow 1-2mm differences due to manual measurement.