Typical service or battery replacement for any McMurdo units usually take 1 – 3 working days from receipt of EPIRB. Inlcudes full service of EPIRB.We are a fully qualified and specialist McMurdo EPIRB Service Centre. Please insert your MMSI No, Vessel Name and delivery details in your delivery details at checkout.You can purchase this item online and send in your EPIRB separately to:CH Marine LtdSkibbereenCorkIrelandWe aim to have EPIRBs serviced in 1 – 3 days before posting back to you.