KNG Exclaimer. System type: single speaker, Recommended usage: other, Speaker placement: Portable. RMS rated power: 2.5 W, Peak Music Power Output (PMPO): 5 W, Frequency range: 30 - 20000 Hz. Connectivity technology: Wired, Speaker interface type: 3.5 mm. Battery voltage: 1.5 V, Battery type: AAA