This portable sound system may be small but it's loud with 150W of pure Class D power to it's bi-amped 8" 2-way speaker system. It's AC or DC battery powered giving up to 6 hours of playtime from the inbuilt battery. It has a smart charging circuit with a 4-step battery LED indicators and charging LED. It has a 3 band EQ and an auto limiting circuit to protect the amp and speakers. It will take a Smartphone/MP3 player connection via cable or with the inbuilt Bluetooth module. This package includes; HELIX 158 Portable PA System Inbuilt Wireless Receiver  Inbuilt Bluetooth Music Receiver EMic Instructor Microphone with Mini Transmitter A Yoga Wrap Everything you need to teach classes - Just add your own music!  Great for poolside use teaching Aqua classes, for Zumba, Pilates, Boxing Instructors and dance teachers, in fact any indoor or outdoor group fitness classes. This is a CD free system, however, a CD/USB Player can be fitted if required - select from the Extras Menu. For any enquiries, please call the team on 02 8399 1052 Tripod not included. SPECS Output power:  150W(RMS) 4Ω load (class-D) Speaker system: 8"LF + 1"HF & electronic crossover Audio input: Mic in x2 (COMBO), Line in x2 (R / L, 3.5mm), Instrument in x2, Digital in (USB) Audio output: Line out (R / L), Aux out, Active out Freq. response: 50Hz-20KHz±3dB Antenna: Built-in Power supply: 100-240V AC / 30-32V DC, 4A Battery type: Lead-Acid  Battery spec: 12V, 5A  Battery Q'ty: 2 / 1 Operating time: 5-6 hrs in music, >10 hrs in speech  Charging time: Approx. 6 hrs  Dimension (mm): 424(H) x 290(W) x 250(D) Weight : 12.5kg Approval: RoHS