This 3 in 1 rechargeable stun flashlight was designed for emergency response units such as police, rescue, fire, military, and security. This awesome unit has a flashlight with a super bright beam, a powerful stun device built into the head as well as an alarm locator alarm (personal alarm) that is an ear-piercing 130 db. This is used by emergency personnel to be found if backup units cannot make visual contact. It also makes a great deterrent against unfriendly dogs that may be approaching. The unit has a knurled metal body and a plastic head with easy access for changing bulbs. The recharge cord simply plugs from the bottom of the unit into any standard outlet. On the handle the unit has three slide switches; Light on/off, Stun on/off and Alarm on/off. There is a master power switch on the bottom so you can safely turn the unit off the entire unit. NiCad batteries can be recharged up to 800 times and will hold a charge 4 months or longer. Replacement bulbs available. 1 Year warranty.