The LED light around the outside of the Whistle Activity Monitor is an easy way for you to determine the battery status. Click here for more information on charging your Whistle.
Press the button on the Whistle once.
- A red light indicates the battery charge is low
- A green light indicates the battery charge is sufficient
- A yellow light indicates a problem with the Whistle device. Click Submit a Request on this page for support.
Note: Pressing the Whistle button also forces an immediate Wi-Fi data sync.