Seiko S240 Movement Details

Seiko caliber S240 is a digital watch movement. Production was in the 1990s.
Find watches with this movement for sale.

Sub-brands: Pulse Meter
Battery:CR2025 / (Lithium)
Accuracy:±20 seconds/month
Day / date?Day + date
GMT / world time?No
Rate:32,768 Hz
Size / diameter:32.0mm
Development division:Daini (Kameido, Tokyo, Japan)
Notes:Has a pulse sensor to measure pulse rate from 30 to 210 beats per minute, as well as physical exercise intensity.
PDF guides: Battery replacement guide : S240A
Technical guide