This black metallic, three-handset system syncs two smartphones, connects to Siri, Google Now and S Voice with one-touch Voice Assist and blocks 150 unwanted numbers. Talking Caller ID tells you who's calling in English and Spanish and the system is expandable to six handsets. Sync Two Smartphones, The simple push of a button links up to two smartphones to make and take cell calls routed through your Link2Cell handsets. Advanced Class 1 Bluetooth extends calling range to 330 ft.