4 of 5 people found the following review helpful
Worth the many over the MM50i,
This review is from: Sennheiser MM70i In-Ear Headset with Smart Remote and Mic for Apple Devices - Black (Electronics)
Worth the many over the MM50i. It's not always clear in the product documentation but the MM70i has 3 buttons at the microphone providing more controls options. I had the MM50i and it broke as the strain relief is not very good at the jack. MM70i has better strain relief.