The BlueAnt S1 - a sophisticated & stylish next generation Bluetooth handsfree - provides the user with the truly hands free experience. True Handsfree - the S1’s voice prompts tell you the number of the incoming caller - simply say “Answer”, “OK” or “Accept Call” to answer the call. Multipoint allows you to connect two phones and answer the one that rings. BlueAnt’s Voice Isolation Technology results in outstanding noise, wind & echo cancellation. Stream music from Bluetooth enabled phones and MP3 players. Full DSP Noise Cancellation / Echo Cancellation Full Duplex, high performance speaker. Up to 15 hours talk time 800 hours standby. 2 Year BlueAnt Replacement Warranty.