Sentry Evolution, rechargeable headphones with In-Line microphone. BT825 Sentry Evolution includes USB charging cable, padded adjustable headband for a comfortable custom fit. Folded design for easy storage, ruberized finish. Moisture and sweat resistant, built-in mic. Talk on the phone, listen wirelessly. Volume and play controls. Control music wirelessly.
Unit Size: 7" x 3" x 7.25".
Innercase Size: 15.5" x 7.5" x 8.75".
Mastercase Size: 16.3" x 7.7" x 18".