... ,2GB,4GB,8GB,16GB,32GBSize and Weightunfold specificationLength:150 mm,Width: 140.mmDepth: 55 mm,Weight: ... Resonance 220Hz±20%HZ Sound Pressure: 130±3 dB at Distortion: 5%less Pure tone Sine wave: ... -in BQB patent certification and quality guarantee with high efficiency and low energy consumption and ... and connected to PC or laptop with Mike line for web voice call.AccessibilityLED indication,mp3,TF card ...