SmartGuard Refill fits in either the SmartGuard 3 or SmartGuard 4 case. Replaces the SABRE Red pepper spray baton held in the SmartGuard case for the iPhone. Enhanced Personal Safety Cell phones provide a lifeline to emergency services. SmartGuard adds the immediate protection of law enforcement strength pepper. Immediately Accessible iPhone users are intensely loyal and take their phones everywhere even when they carry almost nothing else making these cases the perfect place to carry personal safety spray.