Extremely compact 5 W belt amplifier, belt amplifier with active speaker and headset microphone, with adjustable snap-in strap, a complete success as a sound system ideal for professional promotion events "on the road" or leisure performances, ideal for any independent industry and wireless applications such as seminars, conferences, presentations, trade shows, fashion shows, solo artists, weddings, stalls. sale, aerobics, etc. For voice amplification with a maximum of 50 listeners, with microphone input, audio input, tone control and volume control, powered by 6 optional batteries (AA type) or rechargeable batteries, integrated into the battery charger, optional power unit for charging rechargeable batteries, power supply: 9 V DC, per power unit: 9 V DC, 300 mA, by batteries: 6 x 1-in-place 5 V cute (AA), power consumption: 3 W, nominal output power: 5 W RMS, maximum output power: 8 W, distortion: 5%, S/N: 50 dB, frequency range: 50 Hz - 10 kHz, battery operation: 6 - 8 hours. Charging time: 10 hours, microphone type: uni-directional. Electret headphone microphone headset Microphone input: 3.5 mm jack, audio input: 3.5 mm jack, dimensions: 140 x 100 x 50 mm. Weight: 230 g.