Thông tin sản phẩm Loa phóng thanh cầm tay có còi hú Power Output: 6W Rated / 10W Max. 8 AA batteries (8 hrs) Range: 250m (speech) / 315m (whistle) Anti-bacterial treatment for all models (mouthpiece/microphone and handle) High durability ABS or ASA resin construction Compact and lightweight Wide frequency range for enhanced audio quality Neodymium magnets and Polyimide speaker diaphragms