Aquatunes Speaker Module For Wireless Audio Streaming Via Bluetooth Includes 110V docking station/charging base Includes universal rail holder for Aquatunes speaker that connects to shower rails and arms: 7/8 in., 1 in., 1 1/8 in. Output Power 2W with PHILIPS audio technology Connect wirelessly up to 30 ft (line of sight) 8hr Battery life between recharging Waterproof Bluetooth shower speaker with 2 Watt high quality PHILIPS sound Connect wirelessly up to 30 ft (line of sight) via Bluetooth technology Includes an induction charging station and powerful battery (8 hours runtime) to deliver premium hi-fi sound Compatible with 7/8", 1" and 1/18" shower rails