This is the newest and most advanced mini DIY 4K WIFI FULL HD 4k hidden camera on the market. 
All these types of hidden cameras look similar, but they are not the same! This DIY camera is made adhering to the highest manufacturing standards.
Where to get the APP?
1.Scan the QR code from the manual or gift box to download.
2.Search "matecam" on APP Store/Google play.
How to get wifi connection?
1. Click mode button 3 seconds to turn on the camera's wifi;
2. Connect your device to Matecam wifi SSID=MateCam_X1_, PW=88888888;
3. Now your device is wifi linked with the camera.You can reset the Wi-Fi password and the Wi-Fi name as your request.
4.There are five function icons on the right of the APP screen: Advanced settings, Motion detecting, Video, Photo and Playback.
Specifications
Chipset; NOVATEK NT96660;
Image Sensor: OV4689 CMOS Sensor
Video Resolution: 4K-HI 2160p (HI = Horizontally Interpolated from 2880*2160p),2.7K (2704*1520p 30FPS),2K (2560*1440p 30FPS),Full HD (1920*1080p 60FPS) ,HD (1280*720p) 120FPS,VGA (640*480p) 240FPS
Video Format: MOV/MP4 - H.264 with AAC sound
Image Resolutionº16MP/15MP/12MP/8MP/5MP - JPG
Battery800mA Li-Polymer rechargeable battery.
Input/Output: Micro USB/HDMI(HDMI cable sold separately)
Video Format:MOV/MP4 - H.264 with AAC sound 
PC Camera:1080P Image
What's in the box?
Matecam X1 Wifi 4K Hidden Camera + USB cable
Note: Micro SD Card of Class 10 is Highly Recommended for this 4K wifi DIY Camera. Can add up to 128GB Micro SD Card.
Size:1.66x1.66x1.0inch
Weight: 0.1lbs