... phone accessories,for Iphone perimeter accessories,for iphone steering wheel speaker. 1,Output power:RMS 4W(2W+2W)THD=10%2 ... ,Frequency response: 80-18000Hz3,SNR:≥80dB4,Speaker:2*27mm speaker,magnetic resistant 4ohms5,Power supply:3.7V 800mA Li ... 're playing using steering wheel with speakers. Steering wheel with speaker for Iphone 3G 4G