Bluetooth V4.0 Version</br>Supports The Last Number Redial</br>Support Bluetooth Headset Paly Music</br>RQ8 Can Connect With two Bluetooth Cell Phones at the Same Time</br>Built-in 85mAh lithium-ion Polymer Battery?? Enjoy 6 Hours Playing / Talking time?? Long Standby Time (about 150 hours)?? and Only 1.5 Hours Charging time?? 10m Working Range</br></br>Product Description</br></br><b>Specifications:</b><br>Bluetooth Version:CSR8635/V4.0+EDR<br>Bluetooth Profiles:Headset??Hands Free??A2DP??AVRCP<br>Operating Distance:10M<br>Talk Time:4-6"r>Standby Time:150 hours<br>Charging time:About 1.5 hours<br>Charging Port:Micro USB<br>APT-X Support App<br><br><br><b>Charging</b><br>RQ8 Comes With a Built in Rechargeable Battery??Prior to Using it??it Recommended to Charge the B