Hello everyone! I've had the OHO 4K Ultra HD Video sunglasses for over a month now and use them all the time. I'm a retired technician who has worked as a film and radio sound engineer for over 42 years, so I'm well versed in video and audio. My first video sunglasses, which I bought in May 2020, were Gogloo E7 Bikers WI-FI Camera Glasses. Finally received and found defective, SD receivers built into the frames, the card kept refusing. When he finally stayed in, it was overheating after 10 minutes. I liked the concept, WiFi .video and app control. If only they could do one thing right: a lot of technology in a small package and unreliable. Now the OHO 4K HD sunglasses are what I expected, great 4K picture and good stereo sound. I am a motorcyclist, most of the video was shot on the open road because. I understand the sound engineer and except for the sound of the wind traveling at a speed of 60-70 m / h where there are no people on the sound stage. When it comes to the picture that's great, remember the camera/sunglasses is on your head, head jerky movements will be recorded. When I know what I'm recording, I slow down my head movements. Field of view is excellent no complaints, the battery life is about an hour, depends on the format. I did a recording test by connecting the sunglasses to an external 10,000mah card. It took more than 10 hours of recording to fill the internal 128GB SD card at 4K resolution. That's nice, they record when connected to an external power source. Another thing I liked is the ease of use, one button for video and photo. Nothing special, no frills, just good quality. The style perfectly protects from the wind on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. 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The style perfectly protects from the wind on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH 000 mAh it took more than 10 hours of recording time to fill the internal 128GB SD card in 4K resolution. That's nice, they record when connected to an external power source. Another thing I liked is the ease of use, one button for video and photo. Nothing special, no frills, just good quality. The style perfectly protects from the wind on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. This is a very honest review. Good luck and rubber side down πππΊπΈπΊπΈπΊπΈWH The style is an excellent windbreak on the sides. 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