Fitbit Charge 6 Advanced Fitness & Health Tracker, Obsidian w/ Fitness Bundle Lexar Instant Savings The new PRO X line

The new PRO X line also embodies what our professional headphones have always been synonymous with: maximum wearing comfort

AF-P (Pulse Motor) - Yes

1/8″ to 1/8″ cable to connect a smartphone or media player

Twist the lens to turn on

1 Gen1 Type-B port

Fitbit Charge 6 Advanced Fitness & Health Tracker, Obsidian w/ Fitness Bundle Lexar Instant Savings The new PRO X lineFitbit 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.