Bose SBULTSURSETBK Bass Module 700 with Smart Ultra Soundbar For TV With Dolby Atmos and Voice Control and Surround Speakers 700 - Black | BrandsMart USA
Used Bose Bass Module 700 for Soundbar 700 - Arctic White SKU#1690675 809108-1200
Bose Bass Module 700 Wireless Subwoofer for Bose Soundbars, Black - Walmart.com