... -quality 3) Mini usb speaker 4) Size:L Portable laptop mini speaker: Features/Specifications: Brand New & High Quality Vibration ... IncludedHost 1pcs, audio cable 1pcs, product specification 1pcs, power adapter 1pcs, pure metal crust Instructions: 1. Instructions:a. Connect ... alternating current.b. Power is turned on: the power adapter connected, press the power switch button click, machine startup, ...