Your GymBoss quality interval timer will make any workout easier to plan and execute with more accuracy and consistency.

• One or two different time intervals from 2 seconds to 99 minutes
• Auto mode keeps repeating through intervals
• Set up to 99 rounds
• Manual mode acts as countdown timer
• Stopwatch Function
• Alarm by beep, vibration, or both
• Alarm duration of 1, 5, or 10 seconds
• Size of a small pager (1 3/4 x 2 1/4 inches)
• Water and shock resistant
• AAA battery required

Maximize your training to increase:

• Anaerobic endurance
• Cardio endurance
• Increased VO2max
• Muscle strength,
• size, and endurance
• Fat loss

GymBoss Videos demonstrate how to set-up your GymBoss, helpful tips, troubleshooting and more