... to carry, simple operation, saving energy and securityUsing high-tech such as resonance theory Output :3W(rms)3.5 mm stereo plug compatible ... confirmation of order(100-1000pcs 2-3days , 1000-5000pcs 5-7days , 5000-10000pcs 10-15days). However the arrival time ... . Generally, tracking number will be offered for you to track your items. WarrantyWe provide 3 years warranty and guarantee that all items ...