VXi BlueParrott 203320 Xpressway II Convertible 93 Percent Noise Canceling Bluetooth Headset Advanced noise-canceling microphone eliminates up to 93 percent of ambient noise. HD Voice for easy-to-hear, easy-to-understand sound. 7 hours of talk time per charge. Choose the wearing style you prefer: earhook, headband or neckband. Make your phone a walkie-talkie with the VXi BlueParrott App. Use with two cell phones or a phone and PC.Push to talk to one person or a group on Android or iOS phones. NOTE : Kindly refer the User manual which is available below for assistance