AINA’s PTT Voice Responder is a next generation speaker-microphone which can be connected via Bluetooth to iOS and Android smartphones. The device is designed to work with different walkie talkie style Push-to-Talk applications, featuring several buttons which the application developers can assign different functions to. Users can remotely control functions such as push-to-talk, phone calls, channel switching and emergency alerts, while keeping their phone in a safe place and preserving their phone’s battery.