Buyer Beware! Absolute junk! I bought 2 of the ST "Trigger" stun guns. The wrist/pin strap randomly falls out rendering the unit inoperable. An obvious design flaw. I lost both straps within a week. I emailed ST. They want $5.00 for each strap plus about the same for S&H which brings the cost to about 50% of the cost of the unit. Overall quality is terrible for this Chinese junk. Ergonomics is terrible. Buy the competition and save yourself the greif.