Technology date: Product name Waterproof MOTORCYCLE AUDIO MODEL MT493 Brand name AOVEISE Color Black and red...... Rated power 2*15W Speaker impedance 4~8Ω Power supply 12V Output Output speaker Frequency response 100HZ ~ 18KHZ plusmn; 6dB Harmonic Distortion ≤5% Frequency Range 87.5 ~ 108MHZ SNR 40dB Intermediate Frequency 10.7MHZ Noise Sensitivity ≤ 37dB Speaker Size 2.5 inch Waterproof Level IP65 Material Metal/IC/Speaker......Net Weight 0.66KG Features: Music Players Charger for Smartphone Waterproof FM USB Flashlight Compatible with Bluetooth(V3.0) MP3 Note: 1. Due to light difference, the color of the item may be slightly different from the pictures. 2. Please allow slight deviations for the measurement data and make sure you don't mind before ordering.