NXG 5 Inch Indoor/Outdoor Weatherproof, Weather Resistant Bluetooth Wireless Speakers - Black -1 Pair Hard-Wired Input: RCA (750mV sensitivity) (Bluetooth overrides when paired). Bluetooth 4.0 wireless compatibility. Woofer Size: 5" polypropylene woofer, tweeter Size: 3/4" Mylar. Woofer Construction: Polypropylene woofer with rubber surround Power Output: 25 Watts Per Channel (peak). 50 watt maximum power handling Frequency Response: 60Hz - 20kHz. Sensitivity:89dB Equalization:Bass & Treble Adjustments 10dB