Solution: Jerry low power consumption

antenna: on-board antenna;

battery: earphone 30Mah

battery: 200mAh battery belt lithium guard plate

speaker: F8 copper ring

duration of listening to songs: about 4 hours
charging times: 3 times

color box size: 7.5*3.5 * 15CM
stand-alone Weight: 31g
full set weight: 60g
machine size: Length: 40mm width: 26mm height: 27.5mm
carton size: 43*32 * 39.5CM
net weight of the whole box: 6KG
gross weight: 7KG
packing quantity: 100pcs