The Pearly monitor is an economical, palm-size version of Lady-Comp. It fits in any purse, requires no batteries, and is 99.3% effective as a contraceptive.

Features and Highlights: Feature Comparison: Lady-Comp Pearly green light Infertile (contraceptive effectiveness 99.3%; Pearl Index 0.7) Infertile (contraceptive effectiveness 99.3%; Pearl Index 0.7) yellow light Learning, irregular cycles, or missing temperatures Learning, irregular cycles, or missing temperatures red light Fertile or risk of fertility based on lifespan of sperm Fertile or risk of fertility based on lifespan of sperm red blinking light Probable day of ovulation based on all completed cycles to date n/a pregnancy test Probable indication on the 15th day following conception; confirmed on the 18th day following conception Confirmed on the 18th day following conception fertility forcast Next 6 days n/a historical data Review previous 150 days Review previous 99 days cycle statistics Total completed cycles (number of read cycles) Average length of cycle Average increase in temperature at ovulation Ovulation range (plus/minus days from red flashing) n/a print out Available for the past 150 days (no service charge, shipping extra) Available for the past 99 days (service charge applies) device size Circle - diameter 5.5 inches (14 cm), height 1¼ inches (3 cm) Oval - 2½ x 4 inches (7x10 cm), height 1 inch (2.5 cm) weight 7 oz (200 g) 2 oz (60 g) power source Built-in rechargable battery with wall plug (included) Built-in battery (new battery required approx. every 3 years - service charge applies) display Visible in the dark Not visible in the dark software Can be upgraded to Baby-Comp while retaining all cycle data Not upgradable use No regular supplies required. A new probe may be required every 2-5 years based on handling. No regular supplies required. A new battery will be required approx. every 3 years. warranty 5 years 2 years price USD $485.00 single payment USD $299.00 single payment