This remote control tank drives around will sending back live audio and video from the device. It has both a built in mic, video camera, and even night vision. Wireless connectivity is over Wi-Fi which gives you a range of 200 ft unobstructed, or 100 ft around walls and into other rooms.
No word on battery life, but the device is powered by 6 AA batteries and costs $149.99. The control App is a free download off the App Store and runs on iPhone, iPad, iPod Touch (2nd, 3rd and 4th gen).