Main Processor
Ambarella H2 chipset
Quad-core ARMCortex-A53 64-bit CPU .
Image Sensor
SONY IMX377, 1/2.3 inch
12 MP CMOS image sensor with Exmor R
LCD Screen
2.2 inch touch screen, 640x360 screen resolution at 330PPI,^o FOV, 16:9.
250 cd/m2 brightness, 16:9.
Lens
7 layers of glass lens, 155^o FOV, F2.8, f2.66 +/- 5%mm
WiFi and Bluetooth
802.11 a/b/g/n/ac Wi-Fi
Bluetooth 4.0

Video Mode
Video Resolutions / Frames Per Second (fps) NTSC/PAL / Field of View (FOV) / Screen Resolution

4K / 60, 50, 48, 30, 25, 24/ Wide / 3840x2160
4K Ultra / 30, 25 / Ultra Wide / 3840x2160
2.7K(16:9) / 60, 50, 48, 30, 25, 24 / WideMedium / 2704x1520
2.7K Ultra / 30, 25 / Ultra Wide / 2704x1520
2.7K(4:3) / 30, 25 / WideMedium / 2704x2032
1440p / 60, 50, 48, 30, 25, 24 / Wide / 1920x1440
1080p / 120, 100, 60, 50, 48, 30, 25, 24 / WideMediumNarrow / 1920x1080
1080p Ultra / 90, 60, 50, 30, 25 / Ultra Wide / 1920x1080
960p / 120, 100, 60, 50 / WideMedium / 1280x960
720p / 240, 200 / Wide / 1280x720
720p Ultra / 120, 100, 60, 50 / Ultra Wide / 1280x720
480p / 240, 200 / Wide / 848x480

Video Format
H.264 codec, .mp4 file format
Time Lapse Video
Creates video from frames captured at set intervals
4K (16:9)2.7K(4:3) fps:30/25
Interval: 0.5, 1, 2, 5, 10, 30, 60s

Slow Motion
Record high frame rate video, play it at a low frame rates, form the slow motion video
720p fps:60/120/240
Rate: 2/4/8
Video + Photo
Record video and capture Time Lapse photos at the same time
1080p fps:60/50/30/25 1440p fps:30/25 2.7K (4:3) fps:30/25
Interval: 5,10,30,60s
Loop
Record a continuous video loop and overwrites itself until you press the shutter button to stop it and save
Video length: 5 min, 20 min, 60 min, 120 min, Max

Highly Advanced Technologies
Electronic Image Stabilization
Built-in 3 axis gyroscope and 3 axis accelerometer, cross-border compensation
Reduce motion changes to produce stable video quality
Resolutions supported:4K fps:30/25 2.7K(16:9) fps:60/50/30/25 1080p fps:60/50/30/25 960p fps:60/50
Auto Low Light
YI 4K+ Action Camera makes it easier to shoot in low light conditions. It senses the changes of light condition with the CMOS sensor, and the ISP processor will adjust the frame rate and parameters automatically to produce the highest image quality at low light.
Lens Distortion Correction
100% of the wide-angle lens distortion correction

Photo Mode
Photo Resolutions / Field of View (FOV) / Screen Resolution
12MP / Wide / 4000x3000
8MP / Wide / 3840x2160
7MP W / Wide / 3008x2256
7MP M / Medium / 3008x2256
5MP / Medium / 2560x1920
Timer
Count down, then photo capture
Countdown3, 5, 10, 15s
Burst
Press the shutter button to capture a series of photos
Frequency: 3p/s, 5p/s, 10p/s, 10p/2s, 10p/3s, 30p/s, 30p/2s, 30p/3s, 30p/6s
Time Lapse Photo
Capture a series of photos at timed intervals
Interval: Continuous, 0.5, 1, 2, 5, 10, 30, 60s, 2Min, 5Min, 30Min, 60Min
Shutter
Only for Photo Mode and Timer Mode, which determines the length of time needed to open the shutter
Shutter settings: Auto, 2s, 5s, 10s, 20s, 30s
Shooting speed: 1/4096s to 30s

Self-defined IQ parameters for demanding customers
YI 4K Action Camera has multiple high-level settings such as shutter at an exposure time of 30 seconds Exposure Value compensation setting (EV), Setting of level of sensitivity (ISO) Metering Mode White Balance (WB) etc. Together with the choice of 9 shooting modes, you can make impressive work like a professional photographer
WB (White Balance)
Users can adjust the white balance settings to change the overall color of the video or photo
White Balance Setting / Recommended Lighting Conditions
Auto (Default) / Automatically adjusts the white balance via environment, without human intervention
Native / The original color
Tungsten / 3000K, tungsten or sunrise / sunset lighting conditions
Daylight / 5500K, cool fluorescent, average daylight conditions
Cloudy / 6500K, cloudy environmental conditions
ISO (Level of sensitivity)
Change the camera sensitivity to light in low light conditions, in order to enhace the brightness of the videos and photos. In low light conditions, high ISO value will grant a brighter picture, but will also increase the noise level, making it grainy.
ISO for video: Auto (Default), 400, 800, 1600, 32
Lock ISO: The ISO will be locked when in manual mode of shutter speed and max ISO, generating a more stable video quality better for post-editing.

ISO-Max and ISO-Min for Photo / Resulting Photo Quality
Auto (Default) / Automatically adjusts the sensitivity according to the environmental conditions
100 / Bright photo in outdoor daylight, minimal image noise
200 / Bright photo in indoor lighting, marginal image noise
400 / Darker photo in low light, moderate image noise
800 / Darker photo in very low light, increased image noise

EV (Exposure Value compensation)
It influences the brightness of the video or photo. When shooting in a contrasting light environmental conditions, you can adjust this parameter to control the brightness of the video or photo. Value adjustment will increase the brightness of the video or photo based on the default basis
-2.0, -1.5, -1.0, -0.5, 0Default, +0.5, +1.0, +1.5, +2.0
Metering Mode
divided into three metering modes: spot, center and average
Video Quality
divided into high, medium and low grades.
Video Mode / With Wi-Fi Off + LCD Off (YI test lab) / With Wi-Fi On + LCD Off + App Connect(YI test lab)
4K 30fps / 120 Mins 100 Mins
4K Ultra 30fps / 109 Mins / 91 Mins
2.5K 30fps / 138 Mins / 132 Mins
1080p 120fps / 120 Mins / 103 Mins
1080p Ultra 120fps / 120 Mins / 108 Mins
1080p 60fps / 120 Mins / 108 Mins
1080p Ultra 60fps / 156 Mins / 136 Mins
960p 120fps / 148 Mins / 125 Mins
720p 240fps / 134 Mins / 109 Mins
720p Ultra 120fps / 138 Mins / 124 Mins
LCD
Its easy to preview and play back of videos and photos on the LCD
App
Use YI Action App to preview and play back videos and photos.
Computer
Connect via Micro USB to USB cable, preview and play back of videos and photos or copy files from the Micro SD card to your computer.
TV
Preview and play back of videos and photos on your TV via the optional cable.

Storage
For consistently reliable and high quality 4K recording, we highly recommend using the microSD cards (16GB64GB) shown below. UHS Speed Class 3 (U3) at least.

Others
Operate Temperature : 32^oF-113^oF
Operate Humidity : 15 to 90%RH
Storage Temperature : -4^oF-140^oF
Waterproof : Up to 40 meters under water with waterproof case.
USB : USB Type-C
Live streaming: support
RAM : 2GB
Remote Control : Bluetooth 4.0
G-Sensor : Built-in Bosch BMI160, 6-axis gyroscopic, provides precise acceleration and angular rate measurement.
Indicator Light : Tricolor power indicator(red,blue,violet),a red status indicator.
Focal length : 2.66 +/- 5%mm
Mountable : Built-in 1/4 inch Tripod Mount
Average Power Consumption : 3.9W
Audio : Stereo mic Built-in speaker
Voice command: Support
Highest bitrate: 135Mbps

Item Dimension (L inchxW inchxH inch)
9 x 6 x 2

Weight
1.09lb

Warranty Information
1 Year Limited