Product Note: 1. Please make sure your phone can support OTG functionality and also compatible with UVC (USB video device class) before you buy it. Because part of the phone can protect the external camera. (The newest version of android device have this function, if you are not sure it can be suitable, please confirm it before you buy it) 2. The medical endoscope is a remote product close focal length, When taking a photo too close or too far away can be very vague, the best focal length is about: 1.5cm. The further away from the sighting, the lower the clarity of the image. 3. If you have any problem, please contact us first. 4. This one need to download APP, if you worry about it, you can choose the otoscope which includes the screen. First check whether your phone need to open the OTG switch, and scan the QR code on the manual to install the APP, click the icon, if connected to your phone without the picture, you can only use the model of phone only in the following list or use on a computer, thanks for your understanding Please check the above information and your phone carefully before ordering, or we will not be responsible for the above reasons. Why Choose Our 3.9mm 3-in-1 Ear Cleaning Endoscope Camera 3.9MM] small lens design different from the common ear endoscopes 5.5mm probe, our otoscope is 3.9mm, easy and safe to insert your ear, comfortable for children to use (child ear canal diameter: 5mm) and adults. [HD 720P Visual Ear Camera] With 6 adjustable Led 720P 1.0 megapixel usb otoscope, you can enjoy a wonderful experience to capture clear snapshots or real time videos. Note: Its best observation focusing distance to the object is 0.59-1.18 inch (1.5-3cm) [Easy to use] Our digital ear otoscope can work on Windows / Mac OS with user interface. USB charging, Windows XP / 7/8/10, Mac OS 10.6 + PC, download application, easy to use [Anti-hot chip design] Different from common ear endoscope chip design, the chip of Our ear otoscopes camera is far away from the camera, so the camera is cool, not hot, and will not hurt your ear. [Multiple Use Easy Capture] This ear cleaning camera works great for your pet (dogs, cats and more). And its a great inspection camera for the eyes, nose, mouth, skin, and more. Please Note: 1. Children and elders can not use it alone, must be accompanied by a parent. 2. Not suitable for people with narrow ear canal and please wipe with alcohol. 3. We provide 12 month warranty and 24 hour customer support teams. 4. If you have any questions, please feel free to contact us first. Requirements for android phone 1. Make sure the system Android 4.2 or above. 2. Make sure the phone has OTG function 3. Make sure the phone can access an external camera (UVC function). Windows System Computer Requirements Normally, this endoscope can be used for Win 7 / Win 8 / Win9 / Win 10 / Win XP. You can also choose the wifi otoscope, which can be used by iphone. Endoscopic Ear Specifications: Color: gold, silver, blue material: plastic, metal lens: 3.9mm Light sources: 6 pieces LED lights, adjustable brightness best Focal distance: 1.4 - 2cm resolution: 1.3MP resolution: 1280x720 pixels Interface: USB 2.0 Micro USB USB type-c operating system: Android 4.2 or above, Windows 7/8/10, Mac OSX 10.6 or later software functions: taking photos, recording videos, measuring, entering text 3.9mm otoscope package list 1 Ear Cleaning Endoscope 1 x User Manual 1 Set of Ear Cleaning Tools Please make sure your cellphone support OTG and YUV, or it may not be suitable for your cellphone. It can work on all PCs (Windows or Mac OS system).