This handy unit has great sound carry, and can be used either plugged in or battery powered, with a wired mic or wireless. The Megavox is highly portable, light weight and perfect for any type of outdoor event or ceremony. Here’s an easy way to amplify wedding vows, make speeches and toasts at weddings, bar/bat mitzvahs, birthday bashses, this is an economical choice. This unit has been used at dog shows, horse and beef shows, tractor pulls for announcers and event management, for outdoor rallies, for crowd control at field days…. or what have you.