Key features: Integrated SMT technology designed for maximum energy efficiency Designed for use in schools, sporting events, religious events, etc. High quality 35W amplifier with 6" speaker Battery life ~5 hours (max. volume) Professional 16-channel UHF system with built-in infrared linking system ISM-Europe operating band (863-865MHz), does not need any special license Dynamic cardioid microphone Built-in MP3 player with Bluetooth, USB, SD card reader and infrared remote control Built-in echo effect A bag with a carrying strap attached to the product - the ability to use the product directly from the bag 5V DC USB power output (max 500mA) Microphone stand adapter Specification: Amplifier power: 35W Inputs/Outputs: 1x wired microphone, 2x line in, 1x line out Speaker: 6” Dynamic Range: >95dB Harmonic value factor: 7dBuV (SINAD=30dB) Transmitter power: 10mW max. deviation: ±20KHz Microphone batteries: 2x 1.5V AA Battery life: 5 hours Microphone dimensions: Ø50 x 232 mm Microphone weight: 0.26 kg Formats for MP3 player: MP3, WMA, WMW Remote USB and SD card inputs