T-Power Ac Dc Adapter Charger Compatible with Marshall Stockwell Portable Bluetooth Speaker 4091451 04091451 & Advent AW870 Wireless Powered Speakers Wireless Speakers T-Power Made with Brand-new, Input: AC 100V - 240V / Output : 14v~16v ( 15vdc Compatible) Compatible : Marshall Stockwell Portable Bluetooth Speaker 4091451 04091451 Advent AW870 Wireless Powered Speakers Wireless Speakers