1.RoHS,ISO 2.Used for radio,earphone,MP3 player,Mobile Phone and so on 3.Good quality and high sensitivity 4. ... Micro Speaker For Mobile PhoneDimension(mm)13 *4.0HInput Power(W)0.5WMax. Input Power(W)0.8WImpedance(Ω)8 ± 15% S.P ... .L.(dB)92 ± 3db(0.8W ,10CM)average of 1.0,1.2,1.5,2.0 ...