RL 509 Date 6 RL 509 Date 6 Ronda Powertech Quartz Movement is a 3 hand (hour/minute/seconds) Swiss assembled with LARGE DATE at the 6 o'clock position. This gents movement is an 10 1/2 ligne movement, dimensions are 23.30 mm in diameter with a height of 3.00 mm, movement height H1. This is a 1 jewel movement, nickel plates, using a 371 battery with hand dimensions 120/70/20 (hour/minute/sweep second). The best way to determine your movement height is to measure the height of the hour wheel on the movement you are replacing. Movement height H1 has an hour wheel with a height of 1.75 mm.