... Detailed Product Description1, professional presentation, the leading portable Bluetooth spit eaker phone:Bluetooth chip, using ... the infinite charm;3 Golf gorgeous appearance, compact posture feel more cordial;4,10 M ... 3dB)3) signal to noise ratio: ≥ 70 dB4)speaker: 45mm outer diameter, magnetically shielded 4 Europe5) LINE ... blue, black, silver, BLACK FQ Bluetooth Portable Speaker,USB Speaker KS-BQ1