Imprint Method: Deboss, Product Color: Black - This pair of sport-style magnetic wireless earbuds have a built-in microphone that lets you take phone calls while you listen and comes with a round zippered EVA charger case with USB cable. Rechargeable lithium battery with a 32 to 49' transmission range. Approximately 2.5 hours of playback on a full charge; must be charged prior to first use for at least one hour. Available in black or white. Add your school, sports team, organizational or company logo or message to customize.