XS Power IKXS4 12 Volt 4 AWG 140 Amp OFC Battery Isolator Kit Channel_1 to 2 Channels RMS Power @ 2 OHM:

RMS Power @ 2 OHM: 800W

4-Ohm: Less Than 1

and the back logo

(1) Speaker Adapter

Dimension(L x W x H):7" x 4

XS Power IKXS4 12 Volt 4 AWG 140 Amp OFC Battery Isolator Kit Channel_1 to 2 Channels RMS Power @ 2 OHM:Designed For Dual Battery Systems Suitable For 12V 24V Charging Systems Easy Installation Surge Protection Automatic Voltage Level Detection 4 AWG OFC XS Power IKXS4 12 Volt 4 AWG 140 Amp OFC Battery Isolator Kit This Listing Includes: (1) 9ft 4AWG red XSflex Power Cable (1) 2ft 4 AWG Black Ground Cable (2) RTST Positive Battery Terminal (2) RTST Negative Battery Terminal (1) 4 AWG Copper Crimp Lug (2) Red Heat Shrink (1) Black Heat Shrink (10) Cable