found at Bing Lee
Extended Coverage Wireless [WiFi] Network Friendly Digital Duplex Speakerphone Room Monitor / Audio Baby Monitor Intercom / Announce Call Transfer Eco Friendly Mode Polyphonic Ring Tones Call Conferencing Time and Date Display Hearing Aid Compatible [T-Coil] 12 Hours Talk Time 12 Days Standby Time DC 2.4V, 650mAH Battery Capacity Belt Clip Included Waterproof Handset Durable and Rugged Enough to Use Indoor & Outdoor Compatible with the XDECT® 83xx, XDECT® 81xx, XDECT® 5135, SSE35/37, DECT 32xx and DECT 31xx series