1、Clear and loud, the sound of voice amplifier with an output power of 5W is enough to be heard in a classroom of 25 to 60 people. 2、Portable microphones and speakers feature high volume and low feedback, good for teachers, guides, fitness instructors and etc. 3、Long battery life, strong endurance, it also supports playing memory card, USB flash drive and FM radio. 4、Streaming music to the device through the auxiliary port, this voice amplifier can act as a portable speaker. 5、Lightweight, stylish and easy to carry, it can be easily worn on the waist or hung around the neck with the help of the attached belt. 6、Simple plug‑and‑play design allows you to use the microphone with the speaker immediately without worrying about pairing or connectivity. Item Type: Voice Amplifier Material: ABS Weight: Approx. 405.0g/14.3oz Rated Power: 5W Resolution: 80dB Distortion: 1% (3.7V, 1KHz, 1W) Signal to Noise Ratio: 83dB Working Voltage: DC3.7V Charging Voltage: DC5.0V Battery: 18650 battery x1 (not included) Display: LED Display Speaker: 2.5 in x 1 Audio Format: MP3/WMA/WAV Working Temperature: -5°-40° Support 32GB Memory Card How to use: 1. Put the microphone in front of your mouth for maximum amplification. 2. A certain distance should be kept between the microphone and the speaker, and the speaker can be hung on the waist 3. Turn it on, and finally increase the volume gradually as needed. 1 x Voice Amplifier 1 x Charging Cable 1 x Waistband 1 x Wired Microphone 1 x Manual