JBL Battery 400 Spare Battery - Compatible with The JBL PartyBox Stage 320 and Xtreme 4 Portable Speaker (Speaker Sold Separately) Bowers & Wilkins Pi6 Wireless Earbuds - dimensions: 7" x 9-11/16"

- dimensions: 7" x 9-11/16" D x 10-11/16" H (w/bracket)

TV Audio sharing lets you play surround sound in your main room and downmixed stereo in additional zones

start with corner placement on the same wall as the front speakers

Class-D amp design — frequency response: 20-40

JBL Battery 400 Spare Battery - Compatible with The JBL PartyBox Stage 320 and Xtreme 4 Portable Speaker (Speaker Sold Separately) Bowers & Wilkins Pi6 Wireless Earbuds - dimensions: 7" x 9-11/16"Price Match Guarantee JBL Battery 400 Spare Battery Compatible with The JBL PartyBox Stage 320 and Xtreme 4 Portable Speaker (Speaker Sold Separately) The JBL Battery 400 is an external battery designed to extend the playtime of compatible JBL speakers. Here's a breakdown of its key features: Double the Playtime: Each battery provides up to 18 hours of additional playtime for your speaker, effectively doubling the total playtime on a single charge.