Excels in both precision sound and slim design, only 5.6mm thick, with metal material.  Delivering maximum audio performance in even the noisiest of environments by applying latest CVC echo/noise cancellation technology. Dual microphones for pure speech. With attached earphone, BH19 can be used as Bluetooth stereo headset.

   * Bluetooth Specification v2.1+EDR class 2; 
   * The latest version of A2DP1.2 and AVRCP1.0 profiles support;
   * 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;
   * Frequency Response: 20 Hz - 20 KHz, Very high Signal to Noise Ratio (SNR):95 Db, Total harmonic Distortion (THD):0.1%;
   * 3 Button design: MFB, VOL+, VOL-;
   * LED Indicator Status: Blue, Red;
   * Rechargeable 80mAh Li-Polymer Battery;
   * Micro 5PIN USB charging Port;
   * Charger adapter Output: DC 5V&200mA;
   * Nominal charging time: Max 1.5 hours;
   * Talk time: Up to 4 hours;
   * Standby time: Up to 90 hours; 
   * Operating Temperature: -10⁰C - 50⁰C;
   * Storage Temperature: -20⁰C - 80⁰C;