Features: 15W power of sound amplification, to meet the needs of indoor venues with 200 people, outdoor venues with 100 people. What' more, it can still sound amplifying when playing music or U-disk. Small appearance, but the volume is higher than that of mainstream loudspeakers. The digital intelligent chip built into the microphone can judge and reduce noise intelligently through different decibels Sound amplification built-in rechargeable 2400mAh battery, long lasting sound amplification time up to 12hrs. Able to playing music up to 8hrs. 50m transmit distance, no need to grasp the Amplifier along with. More practical functions, enrich your work and life. Support speaker function via Aux wire, one key recording (please insert TF card first) and play music via BT function, FM Radio. And support single loop and full loop during playing music. Widely used in teaching, training, tour guide, conference, promotion and other occasions. Comes with durable lanyard which can hang on the wrist or shoulder, free your hands. Specification: Model: T9 Wired Color: Black, Rose Gold, Red (Optional) Size: 128 x 90 x 37mm Output Power: 15W Output Impedance: 3 Frequency Response: 50HZ-15000Hz Charging Voltage: DC5V, 1A Work Temperature: -10 - 45 Transmit Distance: 50m Speaker Battery: 2400mAh Lithium Battery Speaker Charging Time: 4-6hrs Speaker Discharging Time: 8-12hrs Microphone Battery: 400mAh Lithium Battery Microphone Charging Time: About 4hrs Microphone Discharging Time: About 8hrs Package Size: 21 x 13 x 7cm/8.3 x 5.1 x 2.8in Package Weight: 500g/17.6oz Notes: 1. TF card is not included. Packing List: 1 x Voice Amplifier 1 x Wireless Microphone 1 x AUX Jack Cable 2 x USB Charging Cable 1 x Waistband 1 x User Manual