New XRS321-C Sound Bar SB Remote Control compatible with vizio sound bar SS2520-C6 SB3820-C6 SB3821-C6 SB2920-C6 SS2521-C6 -Part-outlet store NEW VIZIO SOUND BAR REMOTE CONTROL XRS321-C. Compatible with below models: SS2520-C6 SB3820-C6 SB3821-C6 SB2920-C6 SS2521-C6 No need any program, only put into new battery can work well!! USA SELLER, quick shipping! 30 days quality warranty if have any issues, please feel freely to contact with us by amazon message system, we promise to feed back to you within 24 hours, thanks