Hands On Wireless Loudspeakers Megaphone Contest Loudspeakers Loudspeakers Outdoor Amplifier Advertising Recordings Features: Type Megaphone Applicable to the crowd Universal interface Type USB connection mode USB, Frequency response range 200-10KHz, output power 20W, power supply mode, built-in lithium battery The operation mode is not supported for handheld extended storage Speaker count 1, effective distance 500m, battery capacity 1200, playback time 6 hours material, plastic box material, ABS appearance size 125 * 200mm, product weight 0.75kg Product Description: Specification: Weight:750g Material:Plastic Size:20X12.5X21CM Package List: 1Xstorage Note: Please allow slight error due to the manual measurement. Thanks for your understanding. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real. Please take the real one as standard.