YI 4K Specs | YI Technology
Main Processor
Ambarella A9SE chipset, includes a 800 MHz dual-core.Cortex-A9 ARM CPU and a high-performance digital signal processing (DSP) subsystem with a 32-Mpixel image sensor pipeline (ISP), and an advanced H.264 encoder capable of 4K resolution.
Image Sensor
SONY IMX377, 1/2.3", 12 megapixels CMOS image sensor with Exmor R ability.
LCD Screen
2.19", 640*360 resolution touch screen, 330PPI, 250cd/m2 brightness, 30FPS, 160° FOV, 16:9
Lens F2.8 aperture / 155° wide-angle lens, 7G, f=2.66±5%mm
Broadcom BCM43340 Dual-band 5GHz /2.4GHz, built-in (802.11 abgn),offers 30Mbps download speed
65 x 42 x 30 mm

Video Mode

Video Resolutions Frames Per Second (fps) NTSC/PAL Field of View (FOV) Screen Resolution
4K 30, 25 Wide 3840x2160
4K Ultra 24 Ultra Wide 3840x2160
2.7K(16:9) 60, 50, 30, 25 Wide\Medium 2704x1520
2.7K Ultra 30, 25 Ultra Wide 2704x1520
2.7K(4:3) 30, 25 Wide\Medium 2704x2032
1440p 60, 50, 30, 25 Wide 1920x1440
1080p 120, 100, 60, 50, 30, 25 Wide\Medium\Narrow 1920x1080
1080p Ultra 90, 60, 50, 30, 25 Ultra Wide 1920x1080
960p 120, 100, 60, 50 Wide\Medium 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
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. Uses a cross-border compensation algorithm to compensate the motion change to produce stable video quality
Resolutions supported:2.7K (16:9) fps:60\50\30\25 1080p fps:60\50\30\25 960p fps:60\50
Auto Low Light
With a normal camera, the user must manually adjust the parameters according to different light conditions. YI 4K Action Camera makes it easy for you, it senses the change of the light condition with CMOS, and ISP processor will adjust the frame rate and parameters automatically and 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
Ultra Wide
Ultra Wide
Ultra Wide
Count down, then photo capture.
Countdown:3, 5, 10, 15s
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:0.5s, 1s, 2s, 5s, 10s, 30s, 60s, 2Min, 5Min, 30Min, 60Min
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.
The original color
3000K, tungsten or sunrise / sunset lighting conditions
5500K, cool fluorescent, average daylight conditions
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-MAX for Video Resulting Video Quality
Auto (Default)
Automatically adjusts the sensitivity according to the environmental conditions
Darker video in low light, minimum image noise
Moderately bright video in low light, moderate image noise
Brighter video in low light, highest image noise
ISO-Max and ISO-Min for Photo Resulting Photo Quality
Auto (Default)
Automatically adjusts the sensitivity according to the environmental conditions
Bright photo in outdoor daylight, minimal image noise
Bright photo in indoor lighting, marginal image noise
Darker photo in low light, moderate image noise
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, 0(Default), +0.5, +1.0, +1.5, +2.0
Metering Mode
Divided into two metering modes: spot and center.
Video Quality
Divided into high, medium and low grades.
Video Mode With Wi-Fi Off + LCD Off (YI test lab)
4K 30fps 110 Mins
4K Ultra 24fps 115 Mins
2.7K 30fps 144 Mins
1080p 120fps 108 Mins
1080p Ultra 90fps 111 Mins
1080p 60fps 119 Mins
1080p Ultra 60fps 135 Mins
960p 120fps 137 Mins
720p 240fps 118 Mins
720p Ultra 120fps 152 Mins
* The above data is for reference only. Test conditions: lab, about 24 ℃ during daytime, default settings (external ambient temperature, humidity and recording content will affect the battery life)

Photo + Video Playback

It's easy to preview and play back of videos and photos on the LCD.
Use YI Action App to preview and play back videos and photos.
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.
Preview and play back of videos and photos on your TV via the optional cable.


Operate Temperature
Operate Humidity
Storage Temperature
Up to the depth of 40 meters with the waterproof case.
Built-in 4.0BLE & 2.0 Dual
Remote Control
Bluetooth (4.0BLE low power consumption)/The following bluetooth remote control,camera parameters can be set flexibly
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.
Available Colors
Night Black/ Pearl White/ Rose Gold
Focal length
Built-in tripod mount(1/4")
12 Month
Average Power Consumption
Highest bitrate
360° omni-directional dual microphones
Built-in speaker
YI 4K Action Camera records stereo sound in 48kHz, with dual microphones. It optimizes the sound collection and can provide good audio quality even at large outdoor sport events. With AAC Dolby encoder, it records every detail of the sound.
Storage cards
Storage standard: MicroSDHC, MicroSDXC 16GB - 64GB Storage card.
【Please use UHS-I Speed Class 3 (U3) storage card, it can provide High-speed and great performance.】
*We recommend a MicroSD card below to ensure high-quality 4K video.