The Link-to-Cell Bluetooth Cellular Convergence System, model KX-TG7731S, is an amplified, hearing aid compatible, large button cordless telephone with speakerphone and answering machine designed for use by people who have arthritis or low vision or are hard of hearing. The system's Link-to-Cell technology links the phone with up to two cell phones via Bluetooth, allowing the user to transfer up to 600 names and numbers from the cell phone, and make and receive calls on the handset or a Bluetooth headset. The KX-TG7731S system features DECT (Digital Enhanced Cordless Telecommunications) 6.0 technology for interference-free communication, talking caller ID with five handset redial memory, 3,050 name and number phonebook, a 1.8-inch white backlit handset display, LED light-up indicator, easy-to-use big buttons, amplified handset volume with dedicated volume key, intelligent eco mode, tone equalizer, call block, and silent mode. It has hold, mute, flash, clock and alarm functions and a handset-to-handset intercom. This system also features ringer ID and up to 3-way conference capability. Up to six additional handsets (sold separately) can be used with the system. Each handset has a headset jack. A belt clip is included, and the phone base can be mounted on a wall. The answering system has a voice mail alert light-up indicator and a recording capacity of approximately 18 minutes. Available display languages are English and Spanish. ACCESSORIES: Hands-free headsets, range extender, and replacement batteries/adaptor/cord/stand. COLOR: Silver. POWER: The base is powered by a 120 volt alternating current (AC), 60 hertz plug; the handset uses two AAA rechargeable Ni-MH batteries. Charge time is 7 hours. Battery life is 13 hours of talk time and 11 days of standby time. DIMENSIONS (HxWxD): Base - 2.7 x 5.9 x 4.6 inches; handset - 6.9 x 2.2 x 1.4 inches; charger - 1.7 x 2.9 x 3 inches. WEIGHT: 220 grams (base); 150 grams (handset with battery); 50 grams (charger).