The 2nd generation carabiner was developed to meet the needs of experienced climbers and is ready for anyone who wants to wear their VERTIX 2 without a wrist. It keeps your watch safely within reach when you need it. Whether you're climbing a technical route or hiking in the great outdoors, GPS tracking will continue to work flawlessly in the new carabiner. If you want to continue recording your heart rate data, you can pair the watch with an external heart rate monitor to make sure you never miss a step.