1. Loud volume, shocking the audience: using diaphragm speakers, 3W power, the volume exceeds 120 decibels. 2. High-power speakers, full-frequency shock: large-diameter woofer, full-frequency shock, three-dimensional sound surrounds. Loud treble, clear midrange and powerful bass. 3. Small size, flexible and portable, convenient to travel with one hand. 4. Built-in 1000mAh large-capacity lithium battery improves battery life. 5. Wide range of wireless Bluetooth-compatible connection, stable transmission: Bluetooth-compatible 5.0 version, up to 10 meters stable connection range. Multi-scenario application, full functions, good compatibility, easy to deal with scenarios. Receiving range: FM:64-108MHZ MW:520-1710KHZ SW:4.750-21.850MHZ :162.400-162.550MHZ Receive Sensitivity: FM:less than equal 8dB MW:3uV/M SW:40dBuV Quiescent current:less than equal 60uA Maximum current:less than equal 720MA Speaker:40mm/4ohm/3W The number of radio mode storage stations:114 can be stored (FM, 32 medium wave, 50 short wave) Bluetooth-compatible version:VER 5.0 Bluetooth-compatible receiving distance:less than equal 10 meters Minimum operating voltage:3.4V External input voltage:DC: DC.5v Lithium battery BL5C lithium battery:3.7v 1000mAh TF card playback format:support MP3 & WAV & WMA format TF card maximum support capacity:256G Product weight:about 100g Colour:Yellow Material:ABS Size:about88x53x37mm/3.46x2.09x1.46 inch Package Contents: 1 * Lanyard 1 * Charging Cable 1 * Bl5c Lithium Battery 1 * Storage Bag 1 * English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.