Song emperor sound like the high-quality sound for the crowd and developed a professional outdoor mobile speaker details This speaker is a versatile portable PA system, built-in lead-acid batteries, AC and DC dual-use, sounds pure, wear Through strong, perfect sound quality, compact, durable, and easy to operate, two-way wired microphone, microphone volume and bass control set two separate music input, as well as music volume control, pluggable magnetic tape recorders, Walkman, VCD, Guitar, MP3, SD card, and other audio input set high, the bass independent control, set the reverb control functions built-in FM stereo radio, power and memory function Technical parameters Model JY-8630 to use the power and voltage: 220V automatic power management system, intelligent battery charging system and 12v/7AH 2 Rated Power 100 Watts Peak 200 Watts Battery: Available 6 hours Wireless Microphone: Optional receiver with a handheld or lavalier (headset) Microphone Wireless Operating Distance: 50 meters above dimensions: 43 * 33 * 19 cm Weight: 15kg Unit: 8-inch woofer, 6.5-inch midrange: 4-inch tweeter Capacity: 7 Ah * 2, 5-8 hours of continuous use, Intelligent charging circuit and indicator light, without worrying about charging for too long will charge a bad battery, the battery life can theoretically use at discharge 500 times.