The SJCAM SJ20 Dual Lens model is an affordable action camera that can be used to record action videos such as swimming, surfing, skateboarding, hiking, moto vlogs, etc. It's also a great camera for vlogging and capturing everyday moments. This action camera can record 4K video at up to 30fps, as well as capture 20-megapixel photos. It has dual-lens system, which is specially designed for day and night recording. It has also dual screens, so you can see what you're recording from both the front and back. The front display size is 1.3 inches and the rear display size is 2.29 inches. This camera is waterproof up to 131 ft. (with a protective case), so you can take it underwater. Moreover, the camera features six-axis gyro stabilization technology. It helps smooth out your footage, even when you're running, cycling, or skateboarding. The camera also has a variety of other features including pre-recording, car mode, time-lapse video, and slow-motion recording. There's also Wi-Fi connectivity, so you can easily transfer your footage to your smartphone or computer. It's an easy-to-use, durable, and affordable action camera.