TTfone Mercury Big Button Easy to use Senior Cell Phone with SOS button and large easy to read display (Black) Big Button Cell Phone. Handset measures 10.2x4.8x1.3cm, handset with battery weighs 80g. Large Display, SOS Feature, Torch Function - QUAD BAND - (NOT CDMA) SOS Button for Emergency - FM radio bands : 87.5 - 108Mhz The oversized buttons are ideal for those with poor vision or limited dexterity New Large Text User Manual - Online set up videos available