ZORBES Voice Amplifier for Teachers - Microphone Headset Set 2200 mAh, with Headset Microphone Support TF Card/U Flash Disk, Portable Voice Amplifier for Teachers, tour guide, coach, speaker Swimming 120 HIGH DECIBEL:Crisp and loud

120 HIGH DECIBEL:Crisp and loud whistle

High elasticity-strong toughness: Rainbow rubber band has strong elasticity and high toughness

More Details:Hat circumference about 54-60 cm

Resistant to temperatures from -40°F to 446°F for versatile use in ovens

This creative cartoon backpack features a cute

ZORBES Voice Amplifier for Teachers - Microphone Headset Set 2200 mAh, with Headset Microphone Support TF Card/U Flash Disk, Portable Voice Amplifier for Teachers, tour guide, coach, speaker Swimming 120 HIGH DECIBEL:Crisp and loudPOWERFUL SOUND: Compact size voice amplifier with 8W output is clear and noiseless, enough to cover a large room of 10 50 people. Amplifies your voice and saves your throat. LIGHTWEIGHT POWER PACK: Voice Amplifier This microphone and speaker set is a portable public address system. You can take it to multiple places, such as classrooms, bingo calls and outdoors. VOICE AMPLIFIER CAN LONG WORK DURATION: Built in 2200mAh battery. Can work for 8 hours as