For SERIOUS INVESTORS IN PERSONAL SAFETY and people who care about QUALITY; not influenced by "$$$" factor. In my personal opinion, this is probably the best personal protection gadget a person can have, especially ladies. However, men too are taking extra precaution nowadays as they stand a chance to become victims of robbery/mugging too.
There are 5 important attributes that make this a 'GOOD & RELIABLE' pepper spray:
1. Water based
Water based O.C. (Oleoresin Capsicum) is "heavier" than aerosol/gas based hence being able to throw a further striking distance.
Another added advantage is when an attacker wears a full-faced helmet (visor), this water based pepper spray will stick and linger on the edge of the visor, causing the attacker to have breathing difficulties from the vapour discharged from the O.C.
2. Safety Lock
Prevents accidental discharge inside the handbag. Twist the actuator with your THUMB to "live" position and you're ready to go. You may use short bursts or continuous depression of the actuator will fully discharge content.
3. Expiry Date
Generally, all quality pepper sprays come with an expiry date of around 2 years.
4. Quick release
Canister can be removed quickly from the cylindrical plastic holder in the event where the unit is attached to the bunch of car or house keys.