NOKIA HDW-3 Bluetooth Headset Type: Bluetooth Headset Talk Time: Up to 5 hours Standby Time: Up to 120 hours Operating Range: Up to 30 feet Battery: Rechargeable 170 mAh NiMH battery Specifications: Optional Nokia Chargers: ACP-7U, ACP-8U, ACP-12U, LCH-12 Charging time: Up to 2 hours Bluetooth compliance: Bluetooth 1.2 specification, 2.4 GHz ISM band Supported Bluetooth profiles: Handsfree 1.0 and Headset 1.1 profiles Security: Encrypted link Connection: Point-to-point Compatibility: Nokia 3600, 3620, 3650, 3660, 6230, 6310i, 6600, 6620, 6651, 6820, 7610 phones, N-Gage and N-Gage QD game decks Weight: 0.9 oz.