SS670 100 Watt Siren Fire Hooks Unlimited Hydrant Tools 15 Strobe like Flash Patterns Three versions of the 15 Strobe like Flash Patterns that you can change on the fly Adjustable And Removable Shoulder Strap And Top Carry Handle and Two Tone Meets Class A Specifications Self resetting Circuit Protection against speaker shorts Integrated public address microphone Park Kill Auxiliary Input Wiring harness included Locking connector on wiring harness Replaceable jumpers for option selection Positive and negative switching for AUX and PKILL inputs High and Low Voltage Shutdown Protection Drives one 100W speaker Dimensions & Weight: Size: 6" Wide x 6 1 2" Deep x 2" High Boxed Weight: 5 lbs This unit also includes an attached noise canceling PA microphone and is backlit for easy night time readability