Amp up your Easi-Speak so the whole class can listen! Simply insert the microphone (sold separately) to project sound recordings that reach throughout the classroom. Also great for small groups, listening centers and media labsùfeatures 6 headphone jacks and volume control. This durable, portable unit runs on built-in rechargeable battery that lasts up to 3 hours when fully charged. Measures 12"L x 8"H.