Double Focus System - Uses both linear and stepping motos in conjunction with 480 fps AF control to help photographers capture those quick moving moments

Different bearing types have unique pros and cons

Memory Max Up to: 64GB DDR4

GROUP RIDE MOBILE - Yes

Designed for on-the-go handheld shooting

Fitbit Charge 6 Advanced Fitness & Health Tracker, Obsidian / Black Aluminum Slice Double Focus System - UsesFitbit Charge 6 Tracker Product Feature Heart rate on gym equipment Connect Charge 6 to your favorite compatible exercise machine and see your real time heart rate directly on the display. Compatible with select workout machines that support the Bluetooth Heart Rate Profile, and coming soon to more. See here for more information on Charge 6 compatible machines. Daily Readiness Score Find out if your body's ready to work out or needs time to recover.