... 2 * Supports Bluetooth Headset and Hands-free Profile(HFP 1.5)* RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM ... band* Radio Performance: Receive Sensitivity of -90dBm, TX Power Max 4dBm* Speaker output power: 1.5W* 4 Button design: MFB, VOL+, VOL ... -, Mute,* LED Indicator Status : Blue, Red* Rechargeable 750mAh Li-Polymer Battery * Mini 5 Pin ...