O-series metal domes are the oblong shape switches that are designed widely used in the small space for the PCB, FPC, membrane switches and mobile phones. The quality of the O series is also very stable, the life cycles can reach one million times. Dimple and without dimple of O series metal domes are available. The dimple items including that there are one dimple, three dimples, four dimples and five dimples in the metal domes. The size of O series, we have the 5*3.8mm, 4*3.0mm, the force is from 100gf to 600gf. If you want to learn more about the O series metal domes, please contact us anytime, we are glad to be at service.