Fine for all activities, such as running, marathons, yoga, shopping or even wearing to work or school.<br/>Features:<br />Knitted material, fashion and keep warm with answer the phone in winter.<br />Set-in MIC, available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering phone up via the device.<br />Bluetooth Music SportsHeadbands to realize music enjoyment while taking exercise.<br />Removable speakers and amp; washable fabric<br />It can keeps sweat out of your eyes, keep your hair out of your face.<br />The elastic band can be easily adjusted to suit your specific needs and ensure maximum comfort.<br/>Specifications:<br />Color: Black, Light Grey, Dark Grey<br />Broadcast time: 6-7h<br />Battery: 3.7V / 250mA<br />Item size: 180 x 55 x 20mm / 7.1 x 2.2 x 0.8in<br />Item weight: 67g / 2.4ounce<br />Package size: 180 x 55 x 20mm / 7.1 x 2.2 x 0.8in<br />Package weight: 67g / 2.4ounce<br/>Packing List:<br />1 x Music Headband