GymBoss (Free regular mail)
MF Interval Timer / GymBoss
GymBoss (Free regular mail)
MF Interval Timer / GymBoss
GymBoss Interval Timer
GymBoss Interval Timer
GymBoss Interval Timer
GymBoss Interval Timer

GymBoss Interval Timer

Small, easy to use, repeating interval timer. Many versatile functions that make it beneficial to virtually any type of exercise program.

Add accessories to your gymboss like lanyard, bands or protective casing or wear it like a watch

We recommend buying a set of AAA batteries to go with your GymBoss.
No tax
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This 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 (USA) Troubleshooting and Return Policy

Please complete all these steps before reporting the GymBoss as defective.

First insert a NEW battery in the timer, NOT a used battery from another gadget, a
NEW battery and we recommend an Energizer or Duracell battery that is not a

1. Now reboot the timer by inserting a pin or paperclip into the REBOOT hole and
you should feel a slight click. If the reboot is successful, the timer will now be on
and display BH, 10, ALM 1, 3:00, 1:00.
2. While holding NEXT button, press CHANGE button to see “Stop” to verify
stopwatch operation.
3. Hold NEXT button for 3 seconds to turn off.
4. Press any button to turn back on.
5. Enter SETUP and set timer to your desired functions and check operation.

If the problem persists, please review the following and contact us via phone or


Purchases within 1 year:

Movement First will replace your timer with a new timer if it is shown to be defective.

Colours are subject to availability. 

This warranty does not include the accessories. 

We also offer these accessories that are compatible with the timer:



  • Elastic velcro stretches to fit your wrist, forearm, bicep, etc.
  • Color: Black
  • Fits: 9-19 inches (23-48cm)
  • Width: 1 1/8 inches (3cm)


  • Fits 6-12 inches (15-30cm)
  • Width 1 1/8 inches (3cm)


  • Quick release clasp
  • Secure back loop connection
  • Color - Black, with Gymboss repeated in Gray
  • Material - Nylon

Clear Silicone Skin

  • Increase Water Resistance and Shock Protection
  • Fits both the current model Gymboss and the miniMAX model

* Please note the skin does NOT make the timer waterproof, but more water resistant. You cannot submerge your timer underwater, even with the skin on.

We recommend buying a set of AAA batteries to go with your GymBoss.

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