Alcatel OT 501 (or One Touch 501) is a mobile phone, with dual band, featuring a WAP browser (but not GPRS). It can handle a Li-Pol battery, has voice control, and monochromatic display (up to 8 lines), service menu (000000* to activate) and built-in handsfree. It has battery life of up to 7 days, if turned off during the night. The specifications state it has 320 hours standby time and 5 hours talk time.The OT 500 and OT 502 are very similar models.