- Plantronics Discovery 640 Bluetooth headset - Works with all Bluetooth phones - Works with regular cell phone charger - Extended talk time (up to 5 hour talk time, extended to 15 hours with AAA charging accessory) - In ear design - Weighs only 9 grams - Supports last number redial - Voice activated dialing - Soft gel ear tips provide 3 sizes for customizeable comfort - Optional ear stabilizer - Carrying pocket: includes convenient and secure storage - Includes vibrating ring indicator - Includes 4 charging adapters that will work with most cell phone chargers (Nokia, Motorola, Sony-Ericsson, Siemens) - Up to 70 hour standby time - Bluetooth standard 33ft. range - 1 Year manufacturer's warranty - Silver