High sound quality with impressive bass. Hands-free calls. Bluetooth. Large cylindrical 1" x 1" imprint area. Premium promo. Includes a two-in-one cable which serves as both a line-in cable and a mini USB charging cable. Standard white box. Specifications: Input: DC 5V 400mA. Built-in 300mAh Polymer battery, rechargeable. Working distance: 15-20m. Signal-to-noise ratio: Greater than 75db. Frequency: 200HZ -20KHZ. Playing time (at Max Vol): 1 hour. Charging time: 1.5 hours.