Jaeger LeCoultre® calibre # 10ROL mainspring Fits calibers: 10ROL, 480, 800, 810, K830, K831 705 Series Ronda Regula 35 Mvmt requires 2

Regula 35 Mvmt requires 2 weights of 275 grams each which can be purchased separately

3mm Chain End a 3mm chain end that is available in 14kt yellow

part number 1317

or any other jewellery

Length of cut is 3/4" (19mm)

Jaeger LeCoultre® calibre # 10ROL mainspring Fits calibers: 10ROL, 480, 800, 810, K830, K831 705 Series Ronda Regula 35 Mvmt requires 2Jaeger LeCoultre mainspring, part # 770, calibre # 10ROL mainspring to fit Jaeger LeCoultre calibres: 10ROL, 480, 800, 810, K830, K831 *Perrin Supply Ltd is independent of and not affiliated with or sponsored by Jaeger LeCoultre. Jaeger LeCoultre warranty does not apply to parts supplied byPerrin Supply Ltd. Using generic parts may devalue your watch.