This Emergency Backpack Alarm includes a carabiner for easy carrying. Pull the metal ring to activate the alarm and flashing red LED. 

The side switch offers two modes: flashing red for emergencies or fading red/blue to alert companions. 

• Rugged, weather-proof housing with a carabiner for easy attachment. 
• Pull the pin to trigger a 100dB alarm and flashing light. 
• Side switch for red emergency flash or red/blue signal light.