Are you looking for professional and amplifiers? Are you looking for a sturdy, trustworthy tool that can perform multiple tasks at the same time? If so, please look no further! Our loudspeakers must meet your needs. This is one of your . Features -Color: White -Material: Metal -Size: About 9.00X8.40X2.80cm/3.54X3.30X1.10inch -Note: Powered by USB cable -Using professional technology to ensure the high durability of the product, which can be used for a long time. - workmanship, reasonable structure, professional and practical, bring you convenience. -Use the built-in microphone to speak, the loudspeaker will spread your diffusion, convenient and practical. -It can be played in the form of cable, inserting U disk, and so on. -The loudspeaker can diffuse the crisp and clear sound during use to meet your different needs. Specification -Distortion rate: 0.03% -Output power: 3W -Rated voltage: <=36V -Covered space: 1000square meters -Standby time: 72 hours (10 days) -Charging time: 3 hours -Battery Capacity: 2200mAh Package list: 1 x amplifier 1 x microphone 1 x strap 1 x charging line