Compliant with Bluetooth specification V1.2 Support both Headset and Handsfree profiles Easy switching between headset and handset Up to 6.5 hours talk time and 120 hours standby time Range up to 10 meters from your phone ( open area ) LED for line - in - use & battery level check indication Volume control ensure that you can always clearly hear your caller Secured and private communications are ensured through an encrypted link Compatible with most popular Bluetooth mobile phone models such as- Nokia 3230, 3650, 3660, 6230, 6260, 6310, 6310i, 6600, 6630, 6650, 6670, 6810, 6820, 7600, 7610, 7700, 7710, 8280, 8910, 8910i, N-Gage; - Sony Ericsson K700i, P800, P900, P910i, T39, T68, T68i, T610, T630; - Motorola V3, V80, E398, V500, V501, V 600; - SiemensS55, S65, SX1; - Philips Fisio 825 / 826; - Samsung SGH-D500 - Sharp GX15, GX30; - Panasonic X 70; - O2 Xda II, etc.