The MC-405 32.0000K-R3: PURE SN from EPSON is a 32 kHz crystal with ±20 ppm tolerance, 15 pF load capacitance and 35 kΩ resistance, in a 4-SOJ package with 2.29 mm pitch.
The MC-405 32.7680K-A0:ROHS from EPSON is a 32.768 kHz ±20 ppm crystal with 12.5 pF load capacitance and 50 kΩ ESR, in a 4-SOJ package with 2.29 mm pitch.
The MC-405 32.7680K-AG3:ROHS from EPSON is a 32.768 kHz crystal with ±20 ppm tolerance, 7 pF load capacitance and 50 kΩ resistance, in a 4-SOJ package with 2.29 mm pitch.
The MC-405 32.7680K-A3:ROHS from EPSON is a 32.768 kHz ±20 ppm crystal with 12.5 pF load capacitance and 50 kΩ ESR, in a 4-SOJ package with 2.29 mm pitch.