Around 2.5 hours. When the red LED is off, charging is complete.

I've been buying it for two weeks, it works fine, the price is right, it's worth buying!

Of course, the camera supports wifi connection and you can watch it in real time on your phone.

Press and hold the power button for three seconds and release it, the blue indicator lights up, and the camera enters the standby state.

The camera has two wifi options. 1) It can be hooked up to your home wifi. In that case if you have multiple cameras (say 4) you can see all the cameras in 4 panel mode. 2) If you don't have home wifi available, let say you are camping in the forest, you can hook up your cell phone to the camera's transmitting wifi signal to see your image. In this case, just go to you're cell phone's settings, find wifi settings, find the camera's transmitting signal ID, then connect. Once your cell phone connects to the camera's wifi signal, invoke you camera app on your cell phone, then go through the app motions to establish/finish the connection proceedure to see you're camera image. If you use the camera wifi hotspot, and have mutliple camera's, you can only see one camera image at a time. In this case, if you want to see your other camera's, you have to constantly go back to your cell phone's wifi settings, then reconnect to another camera's wifi hotspot signals.

No, this camera does not support zoom in during recording or playback.

Yes, this camera supports recording while charging.

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