The BEST BT Headset 2592/n- Compatible with Bluetooth V2.1+EDR- Precision DSP technology- Dual Microphone noise canceling technology- Multi-Point Device Pairing- Pairing with up to 8 Bluetooth devices- Quick charging Li-Ion battery- Micro-USB charging port- Soft gel ear tips in 3 sizes with detachable ear hook, adjustable for left and right ear- Up to 5 hours talk time- Up to 150 Hours Standby time- Up to 10m Range- Weight: Approximately 12g