Stun Master 800,000 volt Cell Phone Stun Gun has a unique design which gives you a tactical advantage. Because it looks like a harmless cell phone, it will be easy to surprise an attacker. It has a 100 db Alarm, a bright Flashlight, a Disabling Wrist Strap and uses two CR-123A lithium batteries. 4.5 inches tall X 1.75 inches wide X 1 inch thick