If you could share also the hardware spec for 66W and 67W that would be great. Thanks in advance!The Garmin lineup looks kinda strange:
The 45 has two versions: one with IMX322 sensor and another with OV4689 inside. The SoC is Ambarella A12A20 capable recording up to 1080p30.
The 55 is based on A12A55 + OV4689 hardware solution and records 2560x1440p30 video.
The 65w uses A12A20 + OV4689 with high-quality fisheye lens and shoots 1080p30.