... 3.Support remote control 4.OEM/ODM svervice Mini portable amplifier speaker Specification: Brand NameDenkoModel NumberDK-01Capacity800mAh Internal Battery TypeLi-lon batteryInput ... ,MP4,MP5,PC,Laptop/Notebook,Mobile phone,etc WarrantyOne year 1. Mini portable amplifier speaker2. Compact and portable design, wooden box3. ... . Support long time playing about 4 hours Mini portable amplifier speaker