30oz/900ml bluetooth music tumbler set handphone mug detachable speaker bottom sound cup usb charging 18/8 stainless steel insulated vacuum

1) 30oz music mug with 2 straws, premium quality, 1 piece in a paper box, 25pcs in a carton 2) 18/8 304 ss, bpa-straw lid, pp/tpu base, food grade, no detrimental ingredients, temperature retaining more than 6 hours 3) durable double wall vacuumed insulation, no sweat design, easy to clean 4) built-in 500mah battery, usb port, playing 2~5h after 1h charge 5) speaker base can be taken down while washing cup, flashing when working, spill-proof, no immerging into water.syi