The perfect promotional swag is this Stark Bluetooth Speaker
Power your favorite music with this Bluetooth Speaker! Quality sound in a small form that plays your music or other audio from a Bluetooth enabled device or via the 3.5mm audio input, making it compatible with just about anything that plays music. Perfect for anyone that travels and is on-the-go or it can simply sit at a desk in an office setting. The speaker features built in music controls and microphone. 3 Watt Speaker Output. Bluetooth working range is 10 meters (33 feet). Enjoy up to 2hrs. of music at max volume on a single charge. The charging time is 1hr.