Features: Trolley speaker Wireless BT / USB / Micro SD / FM / AUX / Mic Input x 2 Karaoke LED display LED lights with On/Off switch 20.32cm (8") x 2 full range speaker Two wireless mic Phone/Tablet Holder Built-in rechargeable battery Supports external battery Volume, bass & treble controls Remote control Equalizer preset Specifications Driver size : Full range - 20.32cm(8") x 2 Tweeter - 2.54cm(1") x 1 Impedance: Full range - 4Ω, Tweeter - 6Ω Frequency response - 80Hz - 18kHz S/N ratio ≥60dB File format support (USB/mSD) - Mp3, WMA, WAV Line input: 3.5mm Max. supported USB/mSD memory size - 32GB FM frequency range - 87.5 MHz - 108 MHz Charging time - 10hrs Playback time - 11.5 hrs* BT name - ZEB-501 MOVING MONSTER 2X8L BT version - 4.2 Product dimension (W x D x H) - 280 x 265 x 762 mm Package dimension (W X D X H) - 348 x 348 x 830 mm Net. weight - 26.2kg