Garmin has launched its flagship cycling computer, the Edge 1050, which brings a major spec upgrade over the previous 1040 model. In this episode, we conduct a high-intensity marathon review within 48 hours, starting with the device's build and ultra-bright screen, followed by touch sensitivity tests under simulated rain, and penetration distance tests for the new built-in speaker and electronic bell. On the road, we deeply verify the multi-band GNSS positioning speed, real-time gradient response during climbs, and the evolved ClimbPro interface, and test the GroupRide real-time rider connectivity feature. Behind the high-res screen and powerful processing, the trade-offs in battery life and weight are key evaluation points before upgrading.