Synchro | 942 followers on LinkedIn. Synchro is a young and dynamic Irish company established in 2010 to provide managed services to the eir Group; the principal provider of fixed-line and mobile telecommunications services in Ireland with approximately 2 million customers. In partnership with eir, we have built a channel operating 40 retail stores offering a comprehensive range of advanced voice, data, broadband and TV services to the residential and business customers. Our store range includes eir Mobile, eir Broadband, eir Fibre, eir TV.