Important Note: Our endoscope camera is featured with fixed focus, instead of zoom focus. Therefore,in order to get the best image quality, the best observation distance is about 3-8cm/1.2-3.2inch, if too far or too close, it may both affect the image/video quality. Red LED will light up when charging, and will turn off when fully charged. It's normal that the camera will turn hot especially when the LED is in brightest, it will not effect the usage or life-span of the borescope. How to use: 1. Download and install the view app by scanning the QR code from the user manual or directly searching "HD SEE" in the App Store or Google Play. 2. Plug the endoscope camera into the WIFI box via the USB connection at the end of the cable. 3. Press the power button on the WIFI box to turn on the endoscope. 4. Go to the WIFI network settings of you choose device (smartphone, laptop, etc.) and select the WiFi named "HDWIFI_xx"click connect by inputting password "12345678". Note: Pls reconnect the wifi or restart to connect the wifi if failed to connect. Pls make sure the wifi connected well on your device before the next step.5. Open the pre-installed App to view the videos or photos being capturedSpecifications Cable Length: 3.5m/11.5ftImaging Sensor: 2 megapixels CMOS Camera Resolution: HD640*480, 1280*720, 1600*1200 Horizontal View Angle: 72 Degrees Camera Head Diameter: 8mm Light: 8 adjustable white LED lights Waterproof Rating : IP67 for lens/tube only (Updated to IP68 after screw on the waterproof parts) Unobstructed Transmission Distance: 5-10m Power: 3.7V 500mAh rechargeable lithium battery Charging: 5V-2A/1A/500mA Photo Format: JPEG Video Format: AVI Package Contents 1 x Endoscope 1 x Wifi Box 1 x USB Charging Cable 1×9.8FT (3M) semi-rigid Cable 1 x Accessory Set (magnet, hook, Side view mirror, fixed set) 1 x User Manual