The band, as seen in a photo shared by 9to5Mac, appears to be similar to Apple's Woven Nylon bands. It comes in a solid black color but has an accent loop in a dark pink/red shade, lime green, and light blue, the three colors that represent the Activity rings on the Apple Watch.
The red colored ring tracks a person's overall movement and calorie burn throughout the day, and the amount of movement necessary to fill it up will vary based on each person's personal goal. The green ring represents exercise and can be completed with 30 minutes of exercise per day (based on an elevated heart rate), while the blue ring represents how many hours out of the day an Apple Watch user stands up and moves. One minute of standing movement per hour is required to fill the stand ring.
To earn the special Apple Watch band, employees will need to complete the challenge at the "gold" level, earning points by filling their Activity rings for a set number of days.
Apple last year hosted a "Close the Rings" Apple Watch fitness challenge for employees. Rewards for completing that challenge included pins in gold, silver, and bronze, awarded based on performance, along with a T-shirt that included the colorful Activity rings and the phrase "Close The Rings Challenge 1.0."