Specification: 85 * 85 * 30 mm Networking: Wi-Fi (2.4g) Control: Android 4.3 above, IOS 7.0 above Controllable distance: Wi-Fi coverage Resolution: 1280*720 Visible Angle: maximum visible Angle 170° Audio: two-way intercom, with echo elimination Power type: 18650 battery * 2 Push: push within 2s quickly Feature: Low power consumption