Welcome to our srore.Type:Wrist StrapDurable MaterialStylish DesignVersatile UsageGreat ValueModel Number: Coaxial SpeakersSpecial Features: Coaxial SpeakersAudio Sensitivity: 93dB To Noise Ratio: 93dBImpedance: 4Frequency Range (Hz): 60Hz-20kHzOut Power: 300WMaterial Type: Rubber + MetalItem Weight: 337gItem Size: 4 InchColor Name: blackModel Name: Coaxial SpeakersCar Make: for all carsVoltage: 12VSpeakers Types: Coaxial speakersCertification: noneItem Type: Speakers