... takes you into a perfect music world.Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD, ... (±3Db)Signal and noise ratio of power amplifier: ≥80DbLoud speaker 1.77 inches (external diameter 45mm) Magnetic resistant 4OhmsPower ... Household Items,Outdoor Products,Professional LED/Torch Products, Promotinal Gift,Bags and Baskets,Glass Bottles and Bicycles etc. http:// ...