Jabra STONE2 Bluetooth Headset [Retail packaging] Voice Guidance tells who is calling, battery status, set-up, etc. Crystal clear sound & voice (DSP technology) Standby time: 8 days Innovative Bluetooth headset allows you to use just your voice to answer or reject a call Voice Guidance feature tells you name of incoming caller, Bluetooth connection status, and battery level Includes Bluetooth A2DP profile for stereo audio streaming from multimedia on your compatible phone Connects to 2 devices simultaneously; download apps that allow you to send texts or e-mails with voice Up to 10 hours of talk time, up to 360 hours (10 days) of standby time