Innovative pocket charger uses AAA battery to charge headset up to 15 hours between callsDigital Signal Processing (DSP) enhances the incoming voice and removes impurities from the audio signal Ultra-light and comfortable design weighs only 9 grams Vibrate ring 1-touch call control button and voice dialingUp to 3 1/2 hours talk time (increased to 10 with AAA charger) and 80 hours standby Compliant with Bluetooth v2.0 devices up to 33" Includes 3 sizes of soft gel tips over-the-earhook charging adapters and carrying case