JBLBattery 400 swaps out in seconds, so your PartyBox Stage 320/Xtreme 4 can keep the party going twice as long.

JBL Battery 400 swaps out in seconds, so your PartyBox Stage 320/Xtreme 4 can keep the party going twice as long.

JBL PartyBox Stage 320 Portable Bluetooth Party Speaker with Wheels and Telescopic Handle, JBL Pro Sound, Splashproof Design, Light Show, AI Sound Boost, 18-Hour Playtime, Black, UK Plug (Type G)

JBL PartyBox Digital Wireless Microphones for JBL PartyBox Speakers with Wireless Dongle, Stable 2.4 GHz Connection and 20-Hour Playtime, Black