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YI 4K Action Camera
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GoPro HERO4 Black
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Processor
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Ambarella A9SE (Latest Processor)
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Ambarella A9 (Old Processor)
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Sensor
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Sony IMX377 12MP 1/2.3" (Latest Sensor)
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Sony IMX117 12MP 1/2.3" (Old Sensor)
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Display
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Built-in 2.19-inch retina widescreen with touch. 640-by-360 pixels at 330 ppi
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None
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Battery Life
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120 minutes 4K/30 video recording *
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65 minutes 4K/30 video recording
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Wi-Fi module
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Broadcom BCM43340 dual-band, 802.11a/b/g/n, 2.4GHz/5GHz, above 3MB/s download speed * (High Speed)
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Atheros QCA6134X，single-band 802.11b/g/n, 2.4GHz only, around 1.5MB/s download speed * (Low Speed)
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Battery
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3.85V 1400mAh 5.39Wh
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3.8V 1160mAh 4.4Wh
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Gyroscope/Accelerometer
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Embedded low power high resolution 3-axis accelerometer and 3-axis gyroscope
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None
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Microphone
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Dual microphone
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Single microphone
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Remote Control
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Low power Bluetooth remote control
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Wi-Fi remote control
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Power consumption and heat management
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State-of-the-art low power 28nm A9SE chip with no overheat problem. Consistently lower camera temperature
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Old A9 chip with high power consumption. Overheating may cause device to stop recording
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Power on Speed
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3 seconds
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5 seconds
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Timer Mode
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Countdown timer 3, 5, 10, and 15s before shooting
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None
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Slow Motion Mode
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Supports 1/8, 1/4 and 1/2 speed slow motion directly. No need to edit later
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None
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Lens Distortion Correction (LDC)
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Built-in support
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None
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Electronic Image Stabilization (EIS)
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Supported
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None
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Lens
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7 glass, 155 degree wide-angle
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7 glass, 155 degree wide-angle
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Video Mode
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Up to 4K 30fps and 720p 240fps
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Up to 4K 30fps and 720p 240fps
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Photo Mode
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Up to 12-megapixel photo
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Up to 12-megapixel photo
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Burst Mode
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30 photos per second
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30 photos per second
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Time Lapse Video Mode
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Built-in support for 0.5/1/2/5/10/30/60s intervals
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Built-in support for 0.5/1/2/5/10/30/60s intervals
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Loop Recording
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Continuous recording
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Continuous recording
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Auto Low Light
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Automatic low light detection and frame rate adjustment to ensure good exposure
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Automatic low light detection and frame rate adjustment to ensure good exposure
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Manual Mode
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Supports manual setting for shutter/ISO/EV/WB
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Supports manual setting for shutter/ISO/EV/WB
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