Epson Toyocom Corporation RTC-4574NB:B3 ROHS Date Format: YY-MM-DD-dd Features: Alarm, Leap Year Interface: 3-Wire Serial Lead Free Status / Rohs Status: Lead free / RoHS Compliant Memory Size: - Mounting Type: Surface Mount Operating Temperature: -40?°C ~ 85?°C Package / Case: 22-LFDFN Series: - Time Format: HH:MM:SS (24 hr) Type: Clock/Calendar Voltage - Supply: 1.6 V ~ 5.5 V Voltage - Supply, Battery: 1.6 V ~ 5.5 V Other Names: NB10-022251, SER3765TR