Sennheiser
Earbuds & wearables · Last assessed 6/9/2026
Score breakdown
Why this grade
No formal iFixit repairability score exists for Sennheiser true-wireless earbuds, so evidence is thin and the grade is conservative. The Momentum True Wireless (MTW3) has no visible screws and is glued shut, requiring a hot-air gun to open — documented as challenging. Modest positives over Bose: iFixit and community repair guides exist for several Momentum models (Momentum 3 TWS and Momentum 4 battery-replacement guides), showing battery swaps are technically possible. No official OEM parts program; no smartwatch line. Simple Bluetooth pairing with no activation/parts-pairing lock.
Methodology & version
Five dimensions — parts availability, schematic access, repairability, OEM pricing, and software freedom — are scored 0–100 and weighted equally; the letter grade is the average (A 90–100, B 80–89, C 70–79, D 60–69, F below 60). This assessment is current as of 6/9/2026 and cites its sources below. It covers the Earbuds & wearables category and is not a claim about every device the maker ships.