Pool-side and small group instruction just got easier with the iTalk. Fully self contained amplifier, speaker, headset microphone, and built-in belt strap around your waist and you’re ready to go. The iTalk also comes with a charger/AC unit for use with rechargeable batteries (4x AA included). At just a pound, this unit delivers big sound for small groups of 10-15. Great for deck side instruction, class room lectures, group tours, and bicycle and inline skate tours. Not intended for in water use or splash proof - water damage is not covered under warranty.