Genuine Omega® crown wheel with crown wheel core, part number 1101/02, fits Omega® 331, Omega® 333, Omega® 341, Omega® 343, Omega® 352 Omega® 231 length of this chain is

length of this chain is 70 inches

part number 426

Sessions Shop Bob only fits pendulum rods measuring 5/8" or 16 mm in diameter

using a 381 battery with hand dimensions 150/90/25 (hour/minute/sweep seconds)

Working distance is 3-1/2"

Genuine Omega® crown wheel with crown wheel core, part number 1101/02, fits Omega® 331, Omega® 333, Omega® 341, Omega® 343, Omega® 352 Omega® 231 length of this chain isGenuine Omega crown wheel with crown wheel core, part number 1101 02, fits Omega 331, Omega 333, Omega 341, Omega 343, Omega 352 * Perrin Supply Ltd is independent of and not affiliated with or sponsored by Omega. Omega warranty does not apply to parts supplied by Perrin Supply Ltd.