This Bluetooth headset has automatic voice prompt function when there is a call and will automatically speak the mobile phone number Powerful magnetic driver provides high quality sound Multi-point connection can connect two devices at the same time Compact and lightweight, providing comfortable wearing experience Near zero distortion With microphone, support hands-free callsBrand New Stereo Bluetooth Headsets Mini V4.0 Wireless Earphones Handfree With MICGaming Headphones For PS3 PC Fone De OuvidoWireless Earphone Specifications:1.Bluetooth version: Bluetooth 4.1 + EDR2.Frequency: 2.4 ~ 2.48G Hz3.Transmission distance: Up to 10m4.Communication protocol: HFP, HSP, A2PDP, AVRCP5.Frequency response: 2.4GHz6.Microphone sensitivity: -45dB7.Power: Built-in rechargeable Li-ion battery8.Charging voltage: 5V9.Charging time: 2 hours10.Conversation time: 5 ~ 6 hours11.Standby time: 160 hours12.Color: BlackPackage List:1 * Bluetooth Earbuds1 * USB Charging Cable1 * User Manual