Duke BT Waterproof Speaker. The Duke Bluetooth® Waterproof Speaker features a suction cup and a hook that allows you to stick the product almost anywhere. The Duke allows you to control music and conference call on-the-go through your smartphone or by video chat programs like Skype, iChat or Google Talk. Incl. carrying pouch, lanyard and USB charging cable. The Bluetooth working range is 10 metres, playback via Bluetooth up to 6 hours. Packed in an Avenue gift box. ABS Plastic.