The new 3 in 1 elle tens with contraction timer is undoubtedly the ultimate obstetric tens machine built with the same cutting edge technology as the original award winning elle tens the elle tens boasts 3 fully functional units in one for all your labour and post labour needsfeatures and benefits3 units in 1 treats birth pain general pain and pelvic floor toningbuilt in contraction timerpre set modes for ease of useintegrated boost buttonoptimax technology for extra poweruses 4 large