Siemens Gigaset SL785
The SL785 has so much going for it that there was no question it was taking the top spot on the list. First off, it has the longest talk time of any cordless phone on the market with a whopping 15 hours of battery life on a single charge and takes a mere six hours to recharge. Siemens' exclusive ECO DECT technology varies range and transmitting power of the base in an effort to reduce energy consumption and keep calls crystal clear. The handset unit has a headset jack and is Bluetooth capable for a wireless headset in order to make calls or sync and send contact information with a cellular smartphone. There's also a speakerphone built into the handset and not the base, which some consumers may find frustrating as you will not be able to use it as an intercom. But the SL785 does offer the capability of multiple handset units and each one can be silenced exclusively or set for wake up alarms. The phone also has Caller ID and Conferencing features as well as a built-in digital answering machine.