The amplification type is active and the speaker material is plastic and the usage is for mobile phone portable player and the sound channel is 5.1and the snr is 81-90 dB and the color I like is blue special function are touch control memory card support USB disk support universal compatible product universal with logo JBL with packaging JBL and is waterproof lp67 trademark is OEM transport package box specification is 370 origin is Shenzhen China and HS code is 8504401400