Specification Bluetooth: * Bluetooth Specification v3.0 system * Bluetooth® Profile Supported: HSP V1.2, HFP V1.5, A2DP V1.2 * RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band * Radio Performance: Receive Sensitivity of -90dBm, TX Power Max 4dBm * Operating range: Up to 10M Audio: * Frequency Response: 20 Hz - 20 KHz, Very high Signal to Noise Ratio (SNR):95 Db, total Harmonic Distortion (THD):0.1%, * Frequency Response: 60 Hz - 20 kHz * 2W Speaker Output Level: 80dB at 0.5m, * Built-in Anti-noise microphone Interface: * 1 Button design: MFB,, Power Slide switch * LED Status Indicator: Blue, Red, * Mini 5 Pin USB charging Port * Color: white/ Black Power: * Rechargeable 400mAh Li-Polymer Battery * Charger adapter Output: DC 5V&200mA * Nominal charging time: Max 2 hours * Talk time: Up to 12 hours *music play time: Up to 3 hours * Standby time: Up to 400 hours * Dimensions (main body): 75*58.5 * Operating Temperature: -10 ~50 * Storage Temperature: -20 ~80 Package Accessories: * Box: standard or customization * User Manual x1 * USB Cable x 1.